1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alexgriva [62]
3 years ago
11

While doing field work in Madagascar, you discover a new dragonfly species that has either red(R) or clear(r) wings. Initial cro

sses indicate that R is dominant to r. You perform three crosses using three different sets of redwinged parents with unknown genotype and observe the following data:
cross Phenotype
1 72 red-winged,24 clear-winged
2 54 red-wing,49 clear-wing
3 96 red-winged

What is the most likely genotype for each pair of parents in the three crosses?
Biology
1 answer:
pashok25 [27]3 years ago
7 0

Answer: 1. The genotypes of parent that produced 72 red-winged,24 clear-winged are Rr and Rr.

2. The genotypes of parent that produced 54 red-wing,49 clear-wing are Rr and rr.

3. The genotypes of parent that produced 96 red-winged can either be RR and RR or RR and Rr.

Explanation: To get parent's genotypes from offspring's phenotypes, find the phenotypic ratio among the offsprings produced. That will give insight on the allele combination of the parent.

In the case where 72 red-winged,24 clear-winged were produced, the ratio will be 72:24. Dividing the ratio to the lowest term, we will get 3:1. This implies that the ratio of dominant to recessive alleles in the offspring genotypes is 3:1. Only heterozygous crossing can produce the ratio. We can then assign the parent's genotypes as Rr and Rr.

In the case where 54 red-wing,49 clear-wing were the offspring produced, the ratio will be 54:49. Dividing it to the lowest term, we will get approximately 1:1. This implies that the ratio between dominant and recessive allele is 1:1. A test cross will produce this ratio. We can then assign the parent's genotypes as Rr and rr.

In the cross that produced only 96 red-winged flies, the parent's genotypes can either be RR and Rr or RR and RR.

You might be interested in
How does having less carbon dioxide available in a biodome lead to fewer energy storage molecules being made in the biodome?
nirvana33 [79]
This process moves carbon from biotic to abiotic matter. Carbon dioxide in the biodome decreased because decomposers decreased which means there was a decrease in cellular respiration overall.
8 0
3 years ago
Read 2 more answers
Which is an environmental factor that would MOST LIKELY have an adverse impact on the stability of an ecosystem?
mr Goodwill [35]
First! Ask yourself... who, what, when, where
8 0
3 years ago
Which chemical compound seems to be the most responsible for global warming?
Alona [7]
Carbon Dioxide is the main cause, but other effectors include nitrous oxide and <span>methane.

Hope this helps!</span>
8 0
3 years ago
The correct sequence for western blotting is:
diamong [38]

Answer:

3.page is this that answer

Explanation:

a.1,2,3,4

5 0
3 years ago
Why do you think catalase has to work so quickly?
shtirl [24]

Answer:

Hydrogen peroxide is toxic.

Explanation:

Hydrogen peroxide is a natural product of the reactions in the cell. However, it is toxic to cells and has to be broken down.

Catalase catalyses the breakdown of hydrogen peroxide into water and oxygen. It is found in all living cells and is very important to prevent the build up of hydrogen peroxide. If catalase didn't work quickly, hydrogen peroxide would accumulate in the cell and poison it, causing the cell to die.

8 0
3 years ago
Other questions:
  • Alternate versions of a gene are called _______________. they can code for different ________________ of the same character. sel
    7·2 answers
  • Describe the consequences of global warming to a regional community? What are 3 causes and effects of global warming? list credi
    5·1 answer
  • Biological significance of pruning​
    11·2 answers
  • When they (green sea turtles) eat algae, which biomolecule are they getting from it? A. Carbohydrate B. nucleic acid C. protein
    10·1 answer
  • If a single mutation turns off the growth of some pairs of legs within an organism, what's most likely affected?
    12·1 answer
  • What blood group is unique to humans?<br> A) ABAB <br> B) ABO <br> C) ACDKPQU <br> D) DEA
    14·2 answers
  • Giving BRIANLIEST PLZ HELP AND ANSWER ASAP!
    11·1 answer
  • B) que es un elemento?<br><br>c) que es una molécula?​
    10·1 answer
  • Im doing an experiment with Brine shrimp and I am confused how to set up the experiment and the data table. The experiment is to
    10·1 answer
  • Under normal circumstances, carbon dioxide is excreted from the body by what structure?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!