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
Inessa [10]
2 years ago
10

A female fly is heterozygous for three X-linked genes. The dominant alleles are ABC and the recessive alleles are abc. She is cr

ossed with an abc/Y male. The following progeny phenotypes are produced. These phenotypes are equally divided between male and female flies. Abc 420 aBC 435 abc 55 ABC 60 abC 14 ABc 16 Approximately how many double crossovers progeny would you have expected to see in the total of 1,000?
Biology
1 answer:
telo118 [61]2 years ago
8 0

Answer:

<h2>(14+16)/1000 *100= 3</h2>

Explanation:

Parental combinations are always more common then other recombinant progenies.

A female fly is heterozygous for three X-linked genes crossed with an abc/Y male. . If single crossover occurs between a & b  and between b & c, then the double cross is that, which occurs in both.

Double cross over progeny are always least in number, so here double cross occurs are in abC 14 and ABc 16.

So we are expecting that number of double cross over progeny= (14+16)/1000 *100= 3

You might be interested in
Why does lava flow slowly in Hawaii?
Luba_88 [7]
Well lava isn't just plain liquid for instance water runs through a stream fast but lava contains rocks and other materials so it runs slowly
6 0
3 years ago
Read 2 more answers
Chromosomes contain large molecules known as?
Vilka [71]

Answer:DNA

Explanation:

7 0
3 years ago
How does a cladogram show the relationships among organisms?
malfutka [58]

Answer:

Background Information: A cladogram is a diagram that shows evolutionary relationships among groups. It is based on phylogeny, which is the study of evolutionary relationships. ... Each letter on the diagram points to a derived character, or something different (or newer) than what was seen in previous groups.

5 0
2 years ago
Match the description of each plants with the group to which the plant belongs. (Match each number to a letter please!)
Hoochie [10]

The right matches are :

A. bryophyte  ==> 3.

B. pteridophyte  ==> 2.

C. gymnosperm  ==> 1.  

D. angiosperm  ==> 4.


These four types of plants are cormophytes.

Bryophyte is a terrestrial plant belonging to the family Bryophyta, which does not have a real vascular system.

Gymnosperms are the first order of didynamy containing phanerogamous plants whose eggs are not enclosed in closed carpels.

Angiosperms are plants whose seeds are enclosed in a closed ovary.

Pteridophytes produce neither flowers nor seeds but are vascular plants.


7 0
3 years ago
Read 2 more answers
A child is born with downsyndrome when did the mutation occur
Reil [10]
It occurred during meiosis.
just took the test, hope this helps:)
4 0
2 years ago
Other questions:
  • Which part of the brain plays a major role in homeostasis by regulating such processes as heart rate and breathing through the a
    15·1 answer
  • The measure of an atom’s ability to pull electrons away from another atom is called?
    13·1 answer
  • Explain how the vascular system of plants in rainforests might have affected animals behavior and the diversity of life in rainf
    6·2 answers
  • I NEED HELP BY SUNDAY PLEASE HELP<br><br> ALL THREE QUESTIONS IN IMAGE
    10·2 answers
  • The _____ stores glucose as glycogen and converts excess glucose to _____.
    11·2 answers
  • Individuals without AFS have a glutamic acid at position 487 on the ALDH2 protein, whereas individuals with AFS have a lysine at
    5·1 answer
  • There is a sudden decrease in the food availability for wading birds. Make a claim about how the different levels of organizatio
    7·1 answer
  • 2. The process of obtaining and using energy is called
    5·2 answers
  • Explain the three events in sexual reproduction that contribute to genetic variation in a population.
    15·1 answer
  • If a hom.ozygous white horse <img src="https://tex.z-dn.net/?f=C%5EWC%5EW" id="TexFormula1" title="C^WC^W" alt="C^WC^W" align="a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!