1. Consider a population of 1000 rattlesnakes: 550 have black stripes (BB), 200

Question

1. Consider a population of 1000 rattlesnakes: 550 have black stripes (BB), 200 have brown stripes (Bb), and 250 have yellow stripes (bb). Determine each genotype and allele frequency. Be sure to show your work!

2. Consider a population of 1500 marbled salamanders: 976 are homozygous dominant for blue stomachs, 355 are heterozygous dominant for blue stomachs, and 169 are homozygous recessive for green stomachs. Determine all genotype, phenotype, and allele frequencies. Be sure to chow your work!

3.According to the Hardy-Weinberg principle, allelic frequencies will remain constant over time if certain assumptions are met. List those assumptions here:

4. In the following equation, p + q = 1, what does p and q stand for?

5.In the following equation, p2 + 2pq + q2 = 1, what does p2, 2pq, p2 represent?

6.Consider a population of 100 birds: 79 birds have red wings, and 21 have yellow wings (rr). Using the Hardy-Weinberg equation, determine the phenotype, allele, and genotype frequencies. Be sure to show your work!

7. In order for natural selection to occur certain conditions must be met. List those conditions:

8. Evolution requires variation. However, intense selection can _______________________________ from a population.

Explanation / Answer

1 . genotypic frequency is :-

BB :- 550/1000=0.55%

Bb:- 200/1000=0.2%

bb:- 250/1000=0.25%

allele frequency :-

B:- (2*550+200)/2000=0.65

b= (250*2+200)/2000=0.35

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