7. Wha
9. Marfan syndrome is an inherited condition that affects the connective tissue, resulting in
unusually long bones and spinal curvature, as well as vision, cardiac, and respiratory
problems. The syndrome tends to become increasingly severe over time. The following
pedigree shows inheritance of Marfan syndrome in a multigenerational famil (5)y.
8. Wh
5
9. Tra
Th
the
III
Be
us
wi
a) How is this syndrome inherited (dominant, recessive or sex-linked)?
2
b) Can you determine individual 114's genotype? Explain.
b.
с
c) Individual III and I12 are considering having another child. What is the probability that
this child will have Marfan syndrome? Explain using a Punnett square.
Answers
Answer:
The correct answers are :
a) syndrome Could be autosomal recessive or dominant
b) If it is autosomal recessive - no ,
and if it is autosomal dominant - yes, (II-4) - Aa
c) probability of the another child :
Autosomal recessive: Aa x aa 50%
Autosomal dominant: aa x Aa 50%
Explanation:
a) Marfan syndrome could be inherited by the autosomal recessive or dominant pattern on the basis of following characters according the pedigree gives:
- transmitted by anyone regardless of sex male or female
- characters should not skip generations
- A cross between affected person and an normal person should produce approximately half of the affected offspring.
b) Assuming that autosomal dominant than there is two possibilities :
1) in case of I 2 genotype is heterozygous which means it is Aa which will produce Aa Aa aa and aa with crossing with aa as per pedigree however it is incorrect according the offspring given in II.
2) If I 2 is AA- then offspring will be Aa, Aa, Aa and Aa. which is correct according the pedigree.
thus, the answer is - Aa
c) the punnet square as per question is :
II2 - Aa × II1 - aa
A a
a Aa aa
a Aa aa
similar with autosomal recessive
thus, the correct answer is 2 out of 4 that is 50%
Related Questions
Drag each tile to the correct box. Arrange the stages of the frog’s life cycle from first to last. ↓ ↓ ↓ ↓
Answers
You didn't put the answer options, but the frog life cycle phases are:
Mating: In this phase two adult frogs, a male and a female, mate in the water or on plates. At this point, the male frog wraps his arms around the female and overlaps over her back. Spawning: At this point, the female releases the eggs into the water, ready to be fertilized by the males. Fertilization occurs outside the female's body. Eggs: Some fertilized eggs will be devoured by small animals, but those that survive will hatch 7-9 days after fertilization, releasing a frog shape, called a tadpole.Tadpole: It is similar to a fish and is formed by tail, mouth and gills. After 7 days of life, you will be able to swim and feed on algae. Four weeks later he will develop teeth and skin. When he reaches 9 weeks he will begin to change his shape, growing in size and developing head and legs. At that moment it will look more like a frog, but it still has a long tail. Metamorphosis of the fish: Up to twelve weeks of age it will reach the shape of a frog and start to feed on insects. Gradually it will lose its tail and its tongue will grow. The 16 weeks will become an adult frog, being able to mate and restart the cycle.Answer:
The answer is below mark brainlyist
Explanation:
Which correctly describes malignant tumors?
Answers
Answer:
Malignant means that the tumor is made of cancer cells, and it can invade nearby tissues. Some cancer cells can move into the bloodstream or lymph nodes, where they can spread to other tissues within the body—this is called metastasis.
Cancer cells are cells which when it divides it divides more than the needed cell as it causes didorder
Read the following scenarios and indicate which of the following processes they describe.
1. Sodium ions (Na ) move through sodium channels in a synthetic membrane.
2. Sodium molecules move randomly around a solution of sodium chloride in water, frequently colliding with other sodium ions and chloride ions.
3. Water molecules move into the cytosol of a cell placed in a hypotonic solution.
4. Water molecules move into the cytosol of a cell placed in pure water.
5. The action of sodium-potassium pumps moves sodium ions (Na ) out of a cell and potassium ions (K ) into a cell. The action of sodium-potassium pumps moves sodium ions (Na ) out of a cell and potassium ions (K ) into a cell. The action of sodium-potassium pumps moves sodium ions (Na ) out of a cell and potassium ions (K ) into a cell.
6. Glucose molecules move into cells lining the intestine against their concentration gradient driven by the movement of sodium ions (Na ) into the cells down their concentration gradient.
Answers
1.facilitated diffusion
2.diffusion
3.osmosis
4.osmosis
5.active transport
6.cotransport
What would happen to people who have an open wound and whose blood did not clot naturally?
Answers
Answer:
Because blood does not clot properly without enough clotting factor, any cut or injury carries the risk of excessive bleeding. In addition, people with hemophilia may suffer from internal bleeding that can damage joints, organs, and tissues over time.
Explanation:
How can changes on earths surface affect changes below surface
Answers
Answer:
There are several changes that occur on the earth's surface but also affects the changes below the surface, some of them are as follows:
When rainfall occur on the sandy surface on earth, it looses the soil under the surface and can cause landslides.Imbalance in the food chain above or on the earth surface can affect the nutrient quantity below the surface that is essential for soil bacteria and other microorganisms.Deforestation can also loosen the soil and soil under surface can shift its position.Use of chemicals on agriculture surface can lead to change the fertility of soil below the surface.Help Res
Is there a symbiotic
relationship between
plants and water? If so,
what effect does it have on
their ecosystem?
A. Yes, there is a symbiotic
relationship that is beneficial to both.
B. No, this would not be a symbiotic
relationship
C. Yes, there is a symbiotic
relationship that is beneficial for the
plant but harmful to the water.
Answers
Answer: i think its a
Explanation:
what kingdom does fish belongs to?
Answers
Answer:
animalia
Explanation:
For 2 minutes write down every sound you hear. Write in dot points.
What was the quietest noise? What was the loudest noise? Did you have any distractions?
Answers
an example could be:
quietest noise - a clock
loudest noise - family members talking
distractions - a TV show
For a type of cat, short whiskers are dominant (S) and long whiskers are
recessive (s). The Punnett square below shows a cross between two cats.
What is the phenotype ratio for this cross?
sls
sssss
S
Ss
SS
A. O short, 4 long
B. 3 short, 1 long
C. 2 short, 2 long
D. 4 short, 0 long
Answers
The correct answer is option D) 4 short, 0 long.
What is the phenotype ratio?A phenotypic ratio is a quantitative relation between phenotypes showing the number of times the frequency of one phenotype correlates with another. When a researcher would like to obtain the gene expression for generations of an organism, they use the phenotypic ratio obtained from a test cross.
What is the phenotype ratio example?There are two dogs that are heterozygous for black coat color. In this breed, black fur is dominant over white fur. Thus, heterozygous dogs and homozygous dominant dogs have the same phenotype of black fur and homozygous recessive individuals have white fur.
Learn more about phenotype ratio here: brainly.com/question/14086976
#SPJ2
Answer:
C. 2 short, 2 long
Explanation:
In jimsonweed, purple flower (P) is dominant to white (p), and spiny pods (S) are dominant to smooth (s).
A true-breeding plant with white flowers and spiny pods is crossed to a true-breeding plant with purple flowers and smooth pods. Determine the phenotype of:__________.
a) the F1 generation;
b) the F2 generation;
c) the progeny of a cross of the F1 plants back to the white, spiny parent; and
d) the progeny of a cross of the F1 back to the purple, smooth parent.
Answers
Answer:
See attached image for detailed punnet squares and diagrams
a) F1 generation: Purple flower and spiny pods (PpSs) offsprings
b) F2 generation: Puple flower, spiny pods (9), Purple flower, smooth pods (3), White flower, spiny pods (3), white flower, smooth pods (1).
c) The progenies are: PpSS (4), PpSs (4), ppSS (4), and ppSs (4)
d) The progenies are: PPSs (4), PPss (4), PpSs (4), Ppss (4)
Explanation:
This question involves two distinct genes in jimsonweed; one coding for flower colour and the other for pod texture. The alleles for purple colour (P) and spiny pods (S) are dominant over the alleles of white flower (p) and smooth pods (s) in the two genes respectively.
A true-breeding plant with white flowers and spiny pods will have genotype: ppSS while a true-breeding plant with purple flowers and smooth pods will have genotype: PPss. In a cross between these two parents, the following combinations of gametes will be produced:
ppSS- pS, pS, pS and pS
PPss- Ps, Ps, Ps, PS
a) Hence, the F1 offsprings from this cross will possess a heterozygous genotype: PpSs, which is phenotypically purple-flowered and spiny-pod.
b) if the F1 offsprings are self-crossed i.e. PpSs × PpSs, gametes PS, Ps, pS, ps will be produced by each parent. These gametes will be used in a punnet square (see attached image) to produce the following F2 offsprings in proportion:
Purple flower, spinny pods (9)
Purple flower, smooth pods (3)
White flower, spiny pods (3)
White flower, smooth pods (1)
c) if the F1 offsprings are crossed back with the white, spiny parent i.e. PpSs × ppSS. The following progeny of offsprings will be produced: (see attached image)
PpSS (4),
PpSs (4),
ppSS (4), and
ppSs (4)
d) if the F1 offsprings are crossed back with the purple, smooth parent i.e. PpSs × PPss, the following progeny will be produced:
PPSs (4),
PPss (4),
PpSs (4), and
Ppss (4)
The true breeding plant.
As per the question, the jimson weed is a purple flower with capital P and is dominant to white (p) and a spiny pods of (S) which are dominant to smooth (s). The Punnett square method is used for the method. The true breeding have seperate types of genetic make ups.
Answer is F1 generation (PpSs), F2 generation has 9 purple flowers.
True-breeder plant with the white flowers and spiny pods s crossed to a true-breeding plant with the F1 gene will be a flower and spiny pods (Pp Ss) offspring. For the F2 gene Purple flower, spiny pods (9), Purple flower, smooth pods (3), White flower, and spiny pods (3), the white flower, and a smooth pods (1).The progenies are of PpSS (4), PpSs (4), pp SS (4), and ppSs. The progenies follow PPSs (4), the PP ss (4), PpSs (4), Ppss.Learn more about the purple flower.
brainly.com/question/14774402.
In pea plants, purple flower color, C, is dominant to white flower color, c. The table shows the frequencies of the dominant and recessive alleles in three generations of peas in a garden. Allele Frequency for Flower Color in Peas Generation p q 1 0.60 0.40 2 0.64 0.36 3 0.75 0.25 4 0.80 0.20 Which generation showed the greatest frequency of having one of each allele? generation 1 generation 2 generation 3 generation 4
Answers
Answer:
generation 1
Explanation:
The allele frequency is a term that represents the frequency that an allele can appear in a given population. This term can help to develop conclusions about the genetic diversity that a region presents in relation to the individuals that compose it.
In relation to the question above, generation 1 had the highest frequency of having one of each allele. This is because this generation presents the maximum frequency of the dominant and recessive alleles in a coherent way, 0.60 and 0.40. However, the other generations showed a steady and progressive decrease in the recessive allele.
Answer:
Gen 1 or A
Explanation:
Please give me brainliest I need l need to level up.
I neeed help pls answe them plssss
Answers
Answer:
Autosomal dominant and recessive: Autosomal dominant states a pattern of inheritance in which an individual carries one normal gene and one copy of a mutant gene while autosomal recessive states a pattern of inheritance in which an individual have two copies of the mutant gene.
Incomplete dominance: Incomplete dominance states a heterozygous condition in which both the alleles present are partially expressed and produces intermediate phenotype.
Codominance: In codominance and individuals receive alleles, if both the alleles are different including dominant and recessive, dominant allele will be expressed while recessive will be masked.
Multiple alleles: organisms with multiple alleles exist with two copies of every gene present in a population with variation in genes.
Sex linked gene: In humans and some other organisms, sex linked genes are influenced by genes on the X chromosome. for example: If a gene is present on the X chromosome only and not the Y chromosome.
FIGURE 20.15 Brain structure
Answers
The brain is structured in 3 parts: rombencephalon, midbrain and forebrain.
The robencephalon is a little evolved structure and therefore has a very simple and low complexity organization. It is divided into three parts: the medulla oblongata, the annular protuberance and the cerebellum. The robencephalon is responsible for functions that are basic and essential for our organism, in addition, that part of the brain is responsible for our movement. Despite being responsible for basic functions, injuries in any part of the brain can cause serious problems to the body.
The midbrain is responsible for conducting the motor and sensory impulses essential for the full functioning of our body. Its functioning is very important for the full functioning of the organism, without the midbrain, or with the impaired midbrain, the body may present abnormal and strange movements such as inflexibility, spasms and tremors,
The forebrain is the most evolved, developed and complex structure of the brain. It consists of the diencephalon, thalamus, hypothalamus and cerebrum. Due to its complexity, it is responsible for the most complex functions of the organism, being highly efficient and causing serious damage if it does not work properly.
DDT was once considered a "silver bullet" that would permanently eradicate insect pests. Instead, DDT is largely useless against many insects because they are resistant. Propose a hypothesis as to why these organisms have become resistant to the chemical.
Answers
Answer:
None of the individual insects should have possessed genomes that made them resistant to DDT.
Explanation:
Pesticides such as DDT have been considered one of the best way to kill insects in the past. But with time, farmers have observed that this is not an authentic method. This is because the insects can gain resistance to the pests if they are exposed to the pesticide again and again. Even they could transmit these resistant genes in their offsprings. Hence, DDT will become useless against insects over time.
Match the following.
____________ Auditory area.
____________Primary somatosensory cortex.
____________Primary (somatic) motor cortex.
____________Motor speech (Broca's) area.
____________Premotor cortex.
____________Visual area.
____________Gustatory (taste) area.
____________Seat of intelligence, abstract
a. Frontal lobe
b. Parietal lobe
c. Insula
d. Occipital lobe
e. Temporal lobe
Answers
Answer: Please see the explanation column for answers
Explanation: Matching the following, we have
Auditory area------ Temporal lobe
Primary somatosensory cortex-----Parietal lobe
Primary (somatic) motor cortex.------Frontal lobe
Motor speech (Broca's) area-------Frontal lobe
Premotor cortex.------Frontal lobe
Visual area--------Occipital lobe
Gustatory (taste) area------Insula
Seat of intelligence, abstract------Frontal lobe
Why is it important to classify the millions of species on Earth? to have common names that everyone can remember to more easily sequence their genetic material to devise scientific names that only scientists can learn to organize them and speak about them accurately
Answers
Answer:
to organize them and speak about them accurately
Explanation:
There are millions of species that exist on Earth. Many of them are yet to be discovered. They are named and classified into specific groups. This helps in organizing each specie according to the characteristics, and traits. The classification is done to show the hierarchy and focuses on the relationships that the organisms possess with other organisms about evolution. Classification helps in identifying and analyzing any specific specie accurately and particularly.
Answer:
The answer is D.
Explanation:
The first person who answered this was correct.
help asap giving branlist :D
Answers
Answer:
the arrow between the kit fox and a coyote.the arrow between the grasshopper mouse and the red-tailed hawk.the arrow between the grasshopper mouse and the rattlesnake.the arrow between the grasshopper mouse and the coyote.the arrow between the rattlesnake and a red-tailed hawk.Explanation:
All of the options show matter moving from secondary consumers to tertiary consumers.
Hope it helps.
explain test for reducing sugar
Answers
Answer:
A food sample is dissolved in boiling water.
Explanation:
A small amount of Benedict's reagent is added and the solution begins to cool. In the next 10 minutes, the solution changes colour. if it turns blue, there is no glucose present in it.
As it is heated, it turns yellow. The hotter the colour of the reagent, the higher the concentration of reducing sugar. E.T.C.
There is more,e.t.c.
Hope this few helps.
Cilia in cells along the trachea ad nasal passage secrete blank which traps dirt and particles from the air
Answers
Answer:
Yes it secretes blank to trap and particles from the air
Several statements related to the process of cellular respiration are listed. Classify each statement as true or false.
Answers
Answer:
option 1, 2, 4, and 5 are true while 3 is false.
Explanation:
statements are given below.
1) Anaerobic respiration occurs by either lactic acid or alcohol fermentation.
2) Glycolysis is the first step in anaerobic respiration only.
3) only anaerobic respiration produces a net gain of ATP.
4) anaerobic respiration occurs in the cells cytoplasm.
5) aerobic respiration always include the citric acid cycle.
Anaerobic respiration occurs by either lactic acid or alcohol fermentation and produces very low amount of ATP due to the absence of oxygen. Glycolysis refers to the breakdown of glucose molecule in pyruvate and ATP molecules. It only occurs in anaerobic respiration because it does not requires oxygen. Both aerobic and anaerobic respiration produces energy in the form of ATP. Aerobic respiration occurs in the mitochondria of the cell while anaerobic respiration occurs in the cytoplasm. Citric acid cycle is main part of aerobic respiration.
What is the end result of the eukaryoic cell cycle?
A. no parent cells and two daughter cells
B. one parent cel and two daughter cells
C. two parent cells and one daughter cel
D. one parent cell and one daughter cell
Answers
Answer:
A. No parent Cells and two daughter cells
Environmental engineers minimize the impact of land development on the environment.
Please select the best answer from the choices provided
t or f
Answers
The correct answer is True
Explanation:
The focus of environmental engineering is to create technologies and solutions to prevent environmental pollution and destruction, and in this way protect human societies, as well as, natural ecosystems. This includes solutions to reduce the impact of land development that involves altering natural ecosystems to build houses and other human constructions. In this area, environmental engineers make the use of land for humans efficient and create models that are more friendly to the environment. Thus, the statement is true.
Answer:
T R U EExplanation:
just took the test on and got it right
what organisms are herbivores
Answers
Answer:
any organisms that eats only plants
Explanation:
Define feeding of living things
Answers
Explanation:
the process by which the organism obtsin their their food is called feeding of living thing.
Answer:
Explanation:
Feeding is the process by which organisms, typically animals, obtain food. Terminology often uses either the suffixes -vore, -vory, -vorous from Latin vorare, meaning "to devour", or -phage, -phagy, -phagous from Greek φαγεῖν (phagein), meaning "to eat".
A new species is descovered and scientists are trying to calssify it. One of the key features found is that the species is entirely dependent on other organisms for its fodd necessary to ssutain life. What type of species is this? A. Autotrophic B. Heterotrophic C. Producer D. Mixotrophic
Answers
Answer:
B. Heterotrophic
Explanation:
Heterotrphic animals depend on other orgamisms for food. They are made of carnaviors and omnavores. They eat other animals for food.
botanical name for fals yam
Answers
Answer:
Icacina senegalensis.
Hope it helps you:)Answer:
[tex]\boxed{\mathrm{Icacina \:\: oliviformis}}[/tex]
Explanation:
False yam is a root crop found in the Northern part of Ghana.
The botanical name for False yam is Icacina oliviformis.
Is Natural law theory is inconsistent with a theory of human rights. True / False
Answers
Answer:
i think that it's false.
Explanation:
Natural law is a theory in ethics and philosophy that says that human beings possess intrinsic values that govern our reasoning and behaviour. Natural law maintains that these rules of right and wrong are inherent in people and are not created by society or court judges.
The Interests Theory Approach. Advocates of the interests theory approach argue that the principal function of human rights is to protect and promote certain essential human interests. Securing human beings' essential interests is the principal ground upon which human rights may be morally justified.
16. Figure it shows the digestive system
С
D
Answers
Answer:
Is there any picture or diagram to go with this question?
how do animals reproduce..can someone explain in detail please
Answers
Answer:
Asexual reproduction in animals occur through fission, budding,e.t.c.
Sexual reproduction starts with the combination of a sperm and egg which is called FERTILISATION.
Explanation:
The reproductive parts in animals produce gametes that fuse and form ZYGOTE.
Okay, hope it helps.
Answer:
[tex]\boxed{\mathrm{view \: explanation}}[/tex]
Explanation:
Animals should be matured to reproduce.
The animals can reproduce sexually, that involves fusion of sperm and ova inside the body.
Few animals can also reproduce asexually, asexual reproduction does not involve the fusion of gametes, the genetic material is combined to produce an offspring that has inherited the genes of the parent.
Over 95% of incoming UV-B radiation is absorbed in the stratosphere. Please select the best answer from the choices provided
Answers
Answer:
True
Explanation:
The stratosphere is the layer of the earth’s atmosphere which is above the troposphere and below the mesosphere.
The stratosphere contains about 90 percent of the ozone layer. The stratosphere is made up of ozone layers which helps in the absorption of about 95 percent of the ultraviolet rays from the sun and converting to heat.
This is the reason why depletion of the ozone layer found in the stratosphere gives rise to global warming.
Answer:
true
Explanation:
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