Log in
Biology
2
answers
0
watching
65
views
22 Jun 2018

What is a trait that can not undergo evolution in a population of birds? (Assume all of the traits below are heritable.)

a. The length of their tails
b.

The color of their breast feathers
c.

Gender (males have red faces)
d.

Having feathers

Watch
2
answers
0
watching
65
views

For unlimited access to Homework Help, a Homework+ subscription is required.

31 Jul 2023

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
Already have an account? Log in
Share

Related textbook solutions

Molecular Cell Biology
8 Edition,
Lodish
ISBN: 9781464183393
Biology: Science for Life with Physiology
6 Edition,
Belk
ISBN: 9780134555430
Concepts of Biology
OER Edition,
Openstax
ISBN: 9781938168116
Biology
2nd Edition, 2013
Openstax
ISBN: 9781947172517
Essentials of Biology
5 Edition,
Mader
ISBN: 9781259660269

Related questions

In a type of bird color on the feathers is controlled by two different genes. FF birds make black pigments, Ff gray pigment, and ff no pigment, resulting in white feathers. Another gene controls how the pigment is applied to the feathers. SS birds have color on the whole feather, Ss feathers are speckled with white, and ss have all white feathers. You cross FFss birds to ffSS birds. a) What phenotype are the parental strains? FFss ______________ ffSS ________________ b) What is the phenotype and genotype of the F1’s? ___________________________________ c) What fraction of the F2’s will be white?

6. Red-footed boobies vary in plumage color. For simplicity, let’s pretend that there are two forms. Brown birds have darker plumage because they are genotypically either MM or Mm. White birds have light plumage because they carry the genotype mm.

You go out to Genovesa Island with a pair of binoculars and you count the number of melanic and white boobies out of the first 1000 birds you see. You count 490 white boobies and 510 melanic boobies.

a. Assuming HWE, what is the frequency of the M allele of the plumage color gene?

Next, you collect feathers from 500 birds. You extract DNA from the feathers and determine the genotype of the birds at the plumage gene. You genotype 245 white birds and you find that they are all homozygous for the m allele. You genotype 255 brown birds and find that 190 of them are homozygous for the M allele and 65 are heterozygous (Mm).

b. Given this genotype data, what is the frequency of the M allele?

c. Given the what you know about expected and observed genotype frequencies in this group, do you expect that the null hypothesis of Hardy-Weinberg Equilibrium holds true? If not, what evolutionary phenomenon might explain this discrepancy?

population genetics

***Select the correct answer and explain why you have chosen this answer.

SHOW CALCULATIONS

Sample Question #1

A poultry farmer finds that the recessive allele d for droopy feathers has become established in his flock of 5120 chooks, and that about 1 out of every 256 chooks expresses the trait. Assuming that the population is randomly mating for this gene, and that all genotypes have the same reproductive fitness, the number of normal-looking chooks which are carriers of the recessive allele is:

a. 20

b. 600

c. 320

d. 280

e. 1200

Weekly leaderboard

Home
Homework Help 3,900,000
Biology 460,000
Start filling in the gaps now
Log in