Answer: A trait that disappeared in the F1 generation but reappeared in the F2 generation was always a RECESSIVE TRAIT.
Explanation:
The basic laws of genetics were laid down by an Australian monk in 1866, Gregor Mendel. From the results of his experiment, Mendel came to certain conclusions which are referred to as the Mendel's Laws of Heredity one of which includes the Law of Segregation of genes.
The Law of Segregation states that:
--> the hereditary characters of an organism are determined by genes
--> a gene for a character may have alternative forms ( alleles) which express the character in different ways;
--> if a diploid organism has two different alleles ( heterozygous) for a character, one allele may be dominant, dictating the expression of the character to the complete exclusion of the other ( the recessive allele).
Furthermore, Mendel's experiments can be proven by the study of a single- factor inheritance pattern. This is achieved by crossing a pure stock of white- flowered pea plants and red - flowered ones. The offspring of this cross are all red flowered pea plants. They form the F1 GENERATION.
Since only red flower colour is seen in the F1 generation, we say the the red flower form of the character is dominant. White colour, which does not show up in the F1 generation, but reappear in F2 GENERATION when F1 GENERATION is crossed, is said to be the recessive form of the character.
Therefore, this implies that the recessive traits can skip a generation to appear in future generations according to Mendel's experiments.
Answer: Yea it was Recessive.
Explanation: I got it correct on the test
what happens when an atom has lost an electron comes in contact with an atom that has gained an electron?
Answer: When an atom that has lost an electron comes in contact with an atom that has gained an electron, usually the the two atoms would attract each other and form a compound. This compound would be ionic since it is governed by ionic bonding.
Explanation:
When the mother has a blood type a and the baby has a blood type B, which man cannot be the father of the baby?
A) sam blood type O
B) cable guy blood type AB
C) the waiter blood type B
D)none
Answer: blood type O
Explanation:
2. What is the change (mutation) in DNA?
Answer:
A mutation is a change in a genetic sequence. Mutations include changes as small as the substitution of a single DNA building block, or nucleotide base, with another nucleotide base. Meanwhile, larger mutations can affect many genes on a chromosome. Along with substitutions, mutations can also be caused by insertions, deletions, or duplications of DNA sequences.
Explanation:
Some mutations are hereditary because they are passed down to an offspring from a parent carrying a mutation through the germ line, meaning through an egg or sperm cell carrying the mutation. There are also nonhereditary mutations that occur in cells outside of the germ line, which are called somatic mutations. Mutations can be introduced due to mistakes made during DNA replication or due to exposure to mutagens, which are chemical and environmental agents that can introduce mutations in the DNA sequence, such as ultraviolet light. Some mutations do not result in changes in the amino acid sequence of the encoded protein and can be described as silent mutations. Other mutations result in abnormal protein products. Mutations can introduce new alleles into a population of organisms and increase the population's genetic variation.
PLEASE HELLP ME
Which of the following claims correctly describes a kingdom of Domain Eukarya?
A. Kingdom Protista includes single-called organisms that lack nuclei
B. Kingdom plantae includes multicellular organisms that can move independently
C. Kingdom animalistic includes multicellular organisms that make their own food
D. Kingdom fungi includes organisms that get energy by decomposing materials in their environment
Answer:
D
Explanation:
1. protists have nuclei
2. plants don't move independently
3. animals don't make their own food
so option D is the best option
good luck
The following claims correctly describes a kingdom of Domain Eukarya is Kingdom fungi includes organisms that get energy by decomposing materials in their environment.
What are the main features of the Fungi kingdom?Fungi are heterotrophic and eukaryotic organisms that can be unicellular or multicellular. The vast majority of species are filamentous, and these filaments are called hyphae. Some fungi are formed by several densely packed hyphae, which form the so-called mycelium.
The Fungi Kingdom is represented by unicellular or multicellular eukaryotic organisms, being found in the most diverse types of environments. Fungi include mushrooms, molds, wood ears, lichens, among other organisms.
See more about Fungi Kingdom at brainly.com/question/11829903
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please it's my last question Between which points would the phase change of freezing occur?
Answer: Freezing, or solidification, is a phase transition in which a liquid turns into a solid when its temperature is lowered to or below its freezing point. All known liquids, except helium, freeze when the temperature is low enough.
What do polysaccharides and proteins have in common?
A.They both have a carboxyl group.
B.They are both composed of repeating units.
C.They both have nitrogen.
D.They are both found in DNA.
Answer:
I think it's B. They both are composed of reapting unit
Errors that occur during meiosis are present in all cells of the body, whereas errors that occur during mitosis may occur in only a small number of cells.
Answer:
Due to difference in their presence in the body.
Explanation:
Errors that occur during meiosis are present in all cells of the body because meiosis cell division occurs in the sex cells of an organisms so that the errors are effects all the cells of that organism, while on the other hand, errors that occur during mitosis may occur in only a small number of cells because mitosis cell division occurs in the somatic cells so the errors are present in some body cells so we can conclude this errors in meiosis affect all cells whereas errors in mitosis affect less number of cells.
Which of the following is not an example of Homeostasis?
Answer:
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I really need you to answer this.
Answer
A
Explanation:
Some animals don't eat a specific pray, and other hunt more than one specie, which means that they are all food for other organisms that are stronger than them.
mention any two of the functions of proteins in animals
Explanation:
they are important in the biosyntheses
of hormones and enzymes
it is use in the production of energy
PLEASE HELP!!!!!!!!!!!!!!
WILL GIVE 20 POINTS!!!!!!!!!!!
What does the dotted lines on this cladogram represent?
I also need help with this question
Answer:
the gastric chief cell
Explanation:
produces pepsin in stomach
What state(s) of matter would you find between points D and E?
Answer:
gases
Explanation
1. Which of the following terms is not correctly paired with its definition?
a. gene: the specific sequence of DNA that codes for one protein
b. monohybrid cross: tracks the inheritance of one trait or gene
c. allele: the alternate forms of a gene
d. phenotype: the actual physical or functional traits of an individual
e. h o m ozygous: the organism has two different alleles for a gene
Answer:
HEY!
the definition e is wrong.Heterozygous are organisms that has two different alleles for a gene
The others are right.
Which areas of the ocean experience the greatest variation in salinity?
Answer:
The Atlantic ocean is the saltiest
15 POINTS + BRAINLY the answer selected is wrong
Answer:
I think it's the second option
Correct me if i'm wrong but i hope i helped! xoxo
What important process happens at the capillaries?
Answer: Capillaries connect the arterial system — which includes the blood vessels that carry blood away from your heart — to your venous system. Your venous system includes the blood vessels that carry blood back to your heart. The exchange of oxygen, nutrients, and waste between your blood and tissues also happens in your capillaries.
Our understanding of both biology and geology is based on the idea that living things and environments have changed
Group of answer choices.
A. Only since humans appeared.
B. Repeatedly, rapidly and rarely.
C. Slowly, over billions of years.
D. Very little since Earth began.
Answer:
C. Slowly, over billions of years.
Explanation:
Environmental science can be defined as an interdisciplinary field of science that comprises of chemistry, economics, engineering, zoology, geography, geology, biology, ecology, physics, etc., used for the study and understanding of various environmental factors, issues in relation to human life.
Our understanding of both biology and geology is based on the idea that living things and environments have changed slowly, over billions of years.
This understanding is made possible through the study of the relationship between living organisms and their environment, as well with other forms of life found in the ecosystem.
An ecosystem can be defined as the natural living habitats of both living and non-living organisms. Essential services such as plant pollination, water purification, nutrient cycling etc that are being provided by the ecosystem are really very vital, important and useful for the sustenance of life, both for humans and enhances social welfare.
Basically, scientist have been able to study the remains of various living organisms (fossils) from billions of years ago and discovered that the change between the living organisms and the environment occured slowly.
Different genotypes always produce different phenotypes. Explain, using an example, why this is NOT true.
Answer:
Different genotypes don't always produce different phenotypes because though AA & Aa are different genotypes, they are both dominant, therefore having the same phenotype.
Explanation:
Genotype:
AA Aa aa
↓ ↓ ↓
Phenotype:
dominant dominant recessive
(same phenotype) (different phenotype)
I asked this question yesterday and no one responded so I'm asking it again. BTW this is my bio homework. Thank you
Answer:
figure 18 is equal to 16
Explanation:
why is it safer to eat smaller fish with shorter life spans (salmon) than it is to eat lager fish with longer lifespans (tuna)?
How many divisions take
place during meiosis in
order to produce the four
haploid (reproductive)
cells?
A. two
B. one
C. four
Answer:
two cell divisions happen throughout the overall process, so a result of four haploid cells are produced.
Explanation:
A because it consists of two nuclear divisons resulting in four nuclei that are usually turned into four new haploid daughter cells
The cellular mechanism that determines the independent assortment of maternal and paternal chromosomes is: Please choose the correct answer from the following choices, and then select the submit answer button. determined by their dominant or recessive inheritance pattern. separation of sister chromatids at anaphase II of meiosis. separation of sister chromatids at anaphase I of meiosis. separation of homologous pairs at anaphase II of meiosis. separation of homologous pairs at anaphase I of meiosis.
Answer:
separation of homologous pairs at anaphase I of meiosis.
Explanation:
Independent assortment law establishes that the alleles from two or more different genes distribute in gametes independently from each other. In other words, a gamete receives an allele from a gene that does not depend or influence the allele of another gene in the same gamete. This random distribution can only be applied to independent genes. These genes segregate independently after crossing over because they are located far away from each other.
When cell division is going on by meiosis, it involves the random and independent segregation of the alleles. During anaphase I (meiosis), the pairs of homologous chromosomes separate independently of each other. Each integrant of the homologous pair migrates to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. The process is as follows.
During metaphase I, homologous pairs together migrate to the equatorial plane, where they randomly aline with their kinetochores facing opposite poles. The random arrangement of tetrads is different in every cell going through the meiosis process. There is no equal alinement between two cells. When tetrads aline in the equatorial plane, there is no predetermined order for each of the homologous chromosomes of each tetrad to face one of the poles and then migrate to it while separating. Any chromosome of the homologous pair might face any of the poles and then migrate to it. Each of the chromosomes has two possibilities for orientation at the plane. During anaphase I, each of the homologous chromosomes migrate to the corresponding pole. When the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell. This random order in the equatorial plane is what introduces variation into the gametes. It is almost impossible that two gametes resulting from meiosis will get the same genetic charge.
Select the correct answer.
Andrew consumed alcohol at a party. When he returned home he smelled of alcohol. What explains this situation?
ОА. Unmetabolized alcohol is belng excreted OB. Andrew must have spilled alcohol on his clothes while at the party.
ОC. Alcohol is being eliminated by the liver.
OD. shes Andrew may have consumed less alcohol than he thought.
Answer:
OA
Explanation:
the alcohol is being excreted, causing the smell
Ming and his friends were playing baseball. Ming hit the ball into right field and then ran toward first base. The player in right field picked up the ball and threw it to the player at first base.
After the player in right field threw the ball, Ming and the ball were ______.
A. moving in different directions.
B. moving away from first base.
C. moving toward the player in right field.
D. moving at exactly the same speed.
Answer:
i think is a but im not sure but i hope it helps.
Explanation:
During a baseball game, a player’s ball hit into the outfield is modeled by the equation h = –16t2 + 65t. A bird flying across the field follows the path modeled by the equation h = 8t + 20. Let t be the time since the ball is hit and h be the height.
Answer:
A) Moving in different directions
Explanation:
What was the goal of the EPA Chesapeake Bay Study?
Answer:
the 1987 Chesapeake bay agreement set the first numeric goals to reduce pollution and restore the bay ecosystem
SOMEONE HELP I HAVE 51 ASSIGMENTS DOU BY WEDNES
How do mutations occur in the genetic code? This represents crossing over during meiosis.
a) During DNA replication, the original DNA strand GTC ACA GGC ATC is copied into complementary strand CAG CCG TAG. This is an example of deletion.
b)Mutations can only occur when passed on thorough reproduction. The majority of mutations are the result of exposure to mutagens.
c)A woman who has sickle cell anemia passes this disease on to her offspring. This means that the mutation for sickle cell anemia MUST occur in the woman’s gametes.
d)Mutations can be silent and not affect the organism that has them.
Answer:
ILLL HELP YOU MARK ME BRAINLIEST AND START SHOWING ME THE QUESTIONS!!!
Explanation:
OKAY!!!!
please help with my biology
Answer:
Reptiles, like early dinosaurs.
The Louisiana black bear (Ursus americanus luteolus) is a threatened species. Scientists want to determine whether the bear should be put on the state endangered species list. Which level of organization will scientists use as the determining factor in this decision?
A. The population of the bears
B. The community of the bears
C. The ecosystem of the bears
D. The biome of the bears
Answer:
A
Explanation:
They check daily whether population is increasing or decreasing. Based on facts they take action.
The student wants to make a model to provide information about cellular respiration. Drag and drop the
responses below to complete the model.
carbon dioxide and water
chemical bonds
energy released
glucose and oxygen
mitochondria
Answer:
where? mitochondria
inputs. carbon dioxide and water
outputs. glucose and oxygen
energy resources. chemical bonds
energy result. energy released
im not sure but hope this helps :)))