100 Points
2.2.5 Practice
Please have it done by Friday bc my grades come in Saturday
and I put in all the information givin so this should be easy
The reason why im not doing this is bc i have to have all my work done by today because i am going dirtbiking tomorrow after school. Thanks so much
In this activity, you will apply what you have learned in the lesson. Please answer the questions below. Submit this worksheet to your teacher when you are done.
1. Relate alleles to genetic variation and gene pools.
a. How does the number of alleles for each gene in a population relate to the population's genetic variation? (2 points)
b. Describe a population's gene pool in relation to its alleles. (3 points)
2. The gene for coat color in a species has three alleles. The B1 allele codes for brown coloring. The W allele codes for white coloring. The B2 allele codes for black coloring. Examine the illustration of the gene pool for a population of this species.
a. How many allele copies are in this gene pool? (2 points)
b. How many copies of the W allele are present in the gene pool? What is the frequency of the W allele? Show your work. (3 points)
c. How many copies of the B1 allele are present in the gene pool? What is the frequency of the B1 allele? Show your work. (3 points)
d. How many copies of the B2 allele are present in the gene pool? What is the frequency of the B2 allele? Show your work. (3 points)
3. A population has the following genotypic distribution.
Genotype
TT
Tt
tt
Number of individuals
24
78
15
a. What is the total number of allele copies in the population? Hint: Each individual has two alleles. (2 points)
b. What is the frequency of the T allele? Explain your calculations. (2 points)
c. What is the frequency of the t allele? Explain your calculations. (2 points)
4. Describe quantitative characteristics and give an example. Then describe what a histogram can tell you about the distribution of quantitative characteristics of a population. (3 points)
