Answer and Explanation:
Available data:
Red eyes are dominant to whiteDominant allele RRecessive allele rCross: true-breeding red-eye fly bred with a true breeding white-eye fly
Parentals) RR x rr
Phenotypes) Red-eyed White-eyed
Gametes) R R r r
Punnett square) R R
r Rr Rr
r Rr Rr
F1) 4/4 = 100% of the progeny will be heterozygous for the trait expressing red eyes, Rr
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In Drosophila melanogaster, the fruit fly, the gene for the eye color is X-linked. So in this species:
- X⁺ expresses red eyes ----- > + is the dominant allele for red color
- X⁻ expresses white eyes ----> - is the recessive allele for white color
Option 1: true-breeding red-eyed females and white-eyed male
Parentals) X⁺ X⁺ x X⁻Y
Phenotypes) Red-eyed female White-eyed male
Gametes) X⁺ X⁺ X⁻ Y
Punnett square) X⁺ X⁺
X⁻ X⁺X⁻ X⁺X⁻
Y X⁺Y X⁺Y
F1) 4/4 = 100% of the progeny will express red eyes
50% of individuals are red-eyed males, X⁺Y
50% of individuals are red-eyed heterozygous females, X⁺X⁻
Option 2: true-breeding white-eyed females and red-eyed male
Parentals) X⁻ X⁻ x X⁺Y
Phenotypes) Red-eyed female White-eyed male
Gametes) X⁻ X⁻ X⁺ Y
Punnett square) X⁻ X⁻
X⁺ X⁺X⁻ X⁺X⁻
Y X⁻Y X⁻Y
F1) 2/4 = 50% of the progeny will be females expressing red eyes, X⁺X⁻
2/4 = 50% of the progeny will be white-eyed males, X⁻Y
Rename 1/4 and 1/8 using the least common denominator
Answer:
8 is the lowest common denominator
2/8 and 1/8
Explanation:
Predict the results if promoters were not part of the transcription process. Please explain in detail!
Answer:
In genetics, a promoter is a protein-binding DNA sequence that initiates the transcription of a single RNA from the DNA downstream. This RNA can encode proteins, or it can have mobile functions, such as tRNA, mRNA, or rRNA. The promoter is near the starting site of gene transcription, upstream of the DNA (towards the 5 'region of the sense strands). The promoters can consist of about 100–1000 pairs
Explanation:
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Most body cells undergo mitosis, but there are a couple of tissues in the body whose cells do not. Name one of those types of cells.
HELP ASAP
Answer:
Adult stem cells
Explanation: Some very specialized somatic cells such as cardiac muscle cells, nerve cells, and red blood cells do not undergo mitosis.
can someone help me with this question
Answer:
D
Explanation:
It depends on the activities the humans are doing
Answer:
D. both A and B
Explanation:
Human activities can do pollutions and others don't
What are the target cells for the human Growth Hormone?
Answer:
Once released into the circulation, GH binds and activates the cell-surface GHR, as well as the related prolactin receptor in target tissues such as liver, muscle, bone, and adipose tissue
Explanation:
Direct effects are the result of growth hormone binding its receptor on target cells. Fat cells (adipocytes), for example, have growth hormone receptors, and growth hormone stimulates them to break down triglyceride and supresses their ability to take up and accumulate circulating lipids.
Answer:liver, muscle, bone, and adipose tissue I think
Explanation:
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Which of the following is required for a trait to become more common
over time in a population? *
There must be many varieties of the trait in the population.
The trait must allow members of the population to eat only some kinds of foods.
The trait must be the result of an immediate change in the environment.
The trait must give individuals an advantage in producing offspring that survive.
Answer:Natural selection is a process that causes heritable traits that are helpful for survival and reproduction to become more common, and harmful traits to become more rare. This occurs because organisms with advantageous traits pass on more copies of these heritable traits to the next generation.
Explanation:
Help me with these questions
1. Translation takes place in the _______ on a _______
2. What is the point of translation?
3. Transcription and translation together is the process of ________?
Answer:
1. ribosomes; AUG Codon;
Explanation:
2. Translation is the process of translating the sequence of a messenger RNA (mRNA) molecule to a sequence of amino acids during protein synthesis. The genetic code describes the relationship between the sequence of base pairs in a gene and the corresponding amino acid sequence that it encodes.
3. gene expression
Which best describes an advantage the offspring of a flowering plant would have by
reproducing asexually?
A. Reproduction would occur quickly
B. Mating compatibility would improve
C. Reproduction competition would increase
D. Diversity between generations would increase
the roots of the gorse plant have bacteria that turn nitrogen gas into nitrate ions. Explain why nitrate ions are needed by the gores plant
Answer:
Nitrate ions are needed by the gores plant for photosynthesis and for producing proteins
Explanation:
Nitrates ion are essential for producing amino acid which in turn is used for producing proteins. Nitrates is taken up by plants through the roots. Nitrates is vey essential for the photosynthesis of the plants. Without nitrate a plant cannot carry out photosynthesis and hence will not be able to produce food for itself and other living beings.
The half-life of a radioactive element, such as carbon-14, is the time it takes for half of the atoms of the element to decay. How many half-life periods have passed if a fossil contains 1 32 of the original amount of carbon-14?
Answer:
This half-life represents the time in which the number of radioactive nuclei falls to 1/2 of its starting value. Activity, being proportional to the number of active nuclei, also has the same half-life. Life of all the radioactive elements is infinite. Radioactive decay constant 'λ', of different elements different.
hope it helps you
Mark me as brainlist
Answer:its 5
Explanation:
Write a sentence or draw a diagram to relate these words: cell, tissue, and organ.
Answer:
Here
Explanation:
PLEASE HELP .!!! ILL GIVE BRAINLIEST.. *EXRTA POINTS* .. DONT SKIP :(( !
ILL GIVE 40 POINTS .
Answer:
C
Explanation:
Which factor is an abiotic factor of an aquarium ecosystem?
Answer:
I would say, depth.
Explanation:
Hope this helps!
If an organelle is selectively
permeable what can we
infer about its function?
A. The organelle allows molecules to
pass through easily.
B. The organelle doesn't allow any
molecules to pass through.
C. The organelle. allows some
molecules to pass through.
D. The organelle allows large
molecules to pass through easily.
the correct answer there is C.
In this simple food chain, the grass is eaten by the grasshopper which is eaten by the snake which is eaten by the hawk
Using the above scenario, which of these would have the largest amount of available energy?
A)
grass
B)
grasshopper
snake
D)
hawk
[ D.] hawk
Explanation:
I hope it helps u
You are a genetic counselor. A couple comes to you for advice. The female is pregnant with their first child. Both have family histories with Tay-Sachs disease, which is a disorder that progressively destroys nerve cells, leading to loss of motor skills, vision, and hearing. The disease is an autosomal recessive pattern. Which of the following statements is true?
The child will likely have Tay-Sachs disease if both parents pass on the recessive alleles.
The child will likely have Tay-Sachs disease if both parents pass on the dominant alleles.
The child will only have Tay-Sachs disease if the mother passes on the recessive allele.
The child will likely have Tay-Sachs disease if the father passes on the dominant allele.
Answer:
The answer is B: The child will likely have Tay-Sachs disease if both parents pass on the dominant alleles.
Explanation:
Brainliest pls!!
Answer:
The child will likely have Tay-Sachs disease if both parents pass on the recessive alleles.
Explanation:
With autosomal recessive diseases, if the offspring recieves two recessive alleles, they will exhibit the trait.
What does the prefix HOMO- mean?
Answer:
the prefix, homo, means man or human.
Explanation:
The same.
Explanation:
Homogeneous is the same as something.
Heterogeneous is the opposite of something.
Before entering the Krebs cycle, an intermediate molecule bonds to a 2-carbon molecule. This intermediate complex enters into the Krebs cycle, and combines with a 4-carbon molecule to form citric acid. The name of this molecule is _____.
Answer:
The link reaction occurs after glycolysis and before the Krebs cycle. It begins with pyruvate, which loses a carbon as carbon dioxide is formed - leaving a 2-carbon molecule. The link reaction terminates with the production of acetyl coenzyme A.
Explanation:
WILL GIVE BRAINLIEST
All cells have the SAME genes. True/False
Provide an example of this in humans: answer here
Answer:
Almost all of the cells in your body share the same DNA so false deku here! :3
Explanation:
Answer:
False.
Explanation:
All cells do NOT have the same genes due to genetic variation. The reason we have different genes for different cells is to allow the cells to do different things, otherwise all cells would perform the same function.
in the diagram above the substance labeled x is most likey
Answer:
ATP
Explanation:
In the given diagram, the substance labeled X is most likely an enzyme.Therefore, the correct option is 2.
What are enzymes?The biological polymers that catalyze biochemical processes can be referred to as enzymes.Most enzymes are proteins having catalytic properties that are essential to carry out various operations.
One may compare the essential function of a single substrate enzyme to a lock and key.The substrate is the key in this scenario, while the enzyme is the lock. The enzymes here breaks the dipeptides resulting into the formation of mono-peptides. They are very specific and can only alter specific reactions by reacting to the substrates.Therefore, the correct option is 2.
Learn more about enzymes, here:
https://brainly.com/question/30600790
#SPJ2
7. To what Super group does the ameba belong? Mark as brainliest first to get correct.
Answer:
Answer: Rhizaria Supergroup
what does genetic drift mean ?
Answer:
variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.
Explanation:
have a nice day!!!!!!!!
Answer:
Genetic drift- variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals
Explain
Look up genetic drift and look at the videos
PLS HELP!! look at photo!
Answer:
Explanation:
The answers are as follows in respective order to as the blanks are listed:
1. 6
2. 1
3. 7
4. 2
5. 3
6. 4
7. 5
What are cilia and why are they important in the respiratory system?
Answer:
sorry I know that cilia Are the locomotory structure of paramecium I don't know according to the respiratory system but for paramecium, it creates a current in gullet and helps the microbes to engulf the food
What is gas exchange?
Answer:
Gas exchange is the physical process by which gases move passively by diffusion across a surface. For example, this surface might be the air/water interface of a water body, the surface of a gas
I WILL GIVE BRAINLIEST!!!
The pedigree below tracks the presence of dimples through a family's generation. Having dimples is an autosomal dominant trait.
If individuals II-1 and II-2 have a fourth child, what is the probability that the child will have dimples?
Choose 1 answer:
(Choice A)
A
25%
(Choice B)
B
50%
(Choice C)
C
75%
(Choice D)
D
100%
Answer:
It's 50%
Explanation:
I just did it right.
Answer:
50%
Explanation:
answer on khan
Help please!! I'll name you brainliest!!
Answer:
ok :)
Explanation:
1. T
2. T
3. F
4. T
5. F
6. T
7. T
In which era did human history begin?
A
Cenozoic
B
Paleozoic
С
Cambrian
D
Precambrian
E
Mesozoic
Answer:
Prehistoric
Explanation:
The Prehistoric Period—or when there was human life before records documented human activity—roughly dates from 2.5 million years ago to 1,200 B.C. It is generally categorized in three archaeological periods: the Stone Age, Bronze Age and Iron Age.
help ill mark brainlist i guess just help
How old is the Moon?
Answer: its 4.53 billion years old..
Explanation: