answer

watching

views

23 Jun 2019

You are studying a population of ground squirrels. You trap 100 individuals and find 9 that have a light colored coat, and the rest have a dark coat. You know that light coat color is recessive in ground squirrels. What is the allele frequency for the light coat allele and the dark coat allele? How many of the dark coated individuals do you expect to be heterozygotes at the coat color gene? Assume the population is at H-W equilibrium.

answer

watching

294

views

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

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

Keith LeannonLv2

26 Jun 2019

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

Related questions

Part A

In humans, individuals may or may not have a widowâs peak. This trait is controlled by genes at a single locus, with the allele for having a widowâs peak dominant to the allele for not having one. A population of humans is sampled; 59 have a widowâs peak and 44 do not. 25 of the people with a widowâs peak are homozygous dominant. What are the frequencies of the dominant and recessive alleles observed in this sample?

p = _____

q = _____

Part B

In a species of corn, individuals have either narrow or wide corn cobs. This trait is controlled by genes at a single locus, with the narrow cob allele dominant to the wide cob allele. A farmer counts 74 narrow cob and 113 wide cob plants in a field. Of the narrow cob plants, 28 are homozygous dominant. What are the frequencies of the dominant and recessive alleles observed in this sample?

p = _____

q = _____

Part C

In a population of peas, the frequency of the dominant allele for a purple flower is 0.61 and the frequency of the recessive allele for a white flower is 0.39. What would the genotypic frequencies be if the population is in equilibrium?

_____ = Frequency of homozygous dominant individuals

_____ = Frequency of heterozygous individuals

_____ = Frequency of homozygous recessive individuals

How many individuals would you expect of each genotype in a population of 500 peas?

_____ = Number of homozygous dominant individuals

_____ = Number of heterozygous individuals

_____ = Number of homozygous recessive individuals

Part D

In mice, a mahogany coat color allele is dominant over the tan coat color allele. In a population of mice, the frequency of the allele for mahogany coat color is 0.19 and the frequency of the allele for tan coat color is 0.81. What would the genotypic frequencies be if the population is in equilibrium?

_____ = Frequency of homozygous dominant individuals

_____ = Frequency of heterozygous individuals

_____ = Frequency of homozygous recessive individuals

How many individuals would you expect of each genotype in a population of 100 mice?

_____ = Number of homozygous dominant individuals

_____ = Number of heterozygous individuals

_____ = Number of homozygous recessive individuals

Part E

In humans, the free earlobe allele is dominant over the attached ear lobe allele. In a population of humans, the frequency of the allele for free earlobes is 0.42 and the frequency of the allele for attached earlobes is 0.58. What would the genotypic frequencies be if the population is in equilibrium?

_____ = Frequency of homozygous dominant individuals

_____ = Frequency of heterozygous individuals

_____ = Frequency of homozygous recessive individuals

How many individuals would you expect of each genotype in a population of 25 humans?

_____ = Number of homozygous dominant individuals

_____ = Number of heterozygous individuals

_____ = Number of homozygous recessive individuals

rubyleopard160

Question:

Question 1: What is NOT a force of evolution?

Mutation of genes

Genetic drift

Equilibrium of populations

Migration of populations

Question 2:

Crossing true breeding dark-coated sheep with true breedinglight-coated sheep always results in 100% dark-coated offspring.You are screening a population of 300 Soay sheep for coat color,and you count 243 dark sheep and 57 light sheep. What is thegenotype frequency of the homozygous recessive sheep forTYRP1 gene if the population is in Hardy-Weinbergequilibrium?

.421

0..176

0.864

0.190

Question 3:

In the same population, if it is under Hardy-Weinbergequilibrium, how many individuals do you expect to be heterozygousat TYRP1?

217

0.492

148

124

Question 4:

Rabbit's ears can be either short (dominant) or floppy(recessive). If a population of rabbits in Hardy-Weinbergequilibrium has 250 short eared rabbits and 100 floppy earedrabbits, what is the allele frequency of the "short" allele?

.465

0.714

0.845

0.535

Question 5:

To calculate degrees of freedom, we use the following formula:Degrees of freedom - the number of constraints imposed on yourcomparison. How many constraints are there when we use theChi-square test for Hardy Weinberg equilibrium?

Question 6:

You perform a Chi-square test for gene X and find thep-value to be greater than 0.05. What can you say with 95%certainty about this population?

This population is in Hardy-Weinberg equilibrium at theX locus: gene X isinfluenced by at least oneforce of evolution.

This population is in Hardy-Weinberg equilibrium at theX locus: gene X is notinfluenced by any forces ofevolution.

This population is not in Hardy-Weinberg equilibrium at theX locus: gene X isinfluenced by at least oneforce of evolution.

This population is not in Hardy-Weinberg equilibrium at theX locus: gene X is notinfluenced by any forces ofevolution.

jadegrasshopper512

1a. You discover a population of butterflies. If the alleles for spots (S) is dominant to the allele for no spots (s) and both have equal frequency in the population, how many spotted butterflies should you expect in a population of 100 individuals if it is in Hardy-Weinberg equilibrium? How many individuals are heterozygous?

1b. Within the same population of butterflies, dark blue color (B) of the wings has incomplete dominance over white wings (b). If a population of 100 butterflies is in HardyWeinberg equilibrium and has 36 dark blue individuals, what are the allele frequencies and how many white and light blue individuals would you expect to see?