Question 7 (1 point) Sand crabs are found up and down the CA coastline and show

Question

Question 7 (1 point)

Sand crabs are found up and down the CA coastline and show population structure. A population at Newport Beach is analyzed for an SNP and the f(C) = 0.9 while the f(T) = 0.1. Another population is studied near Santa Cruz, and f(C) = 0.3 and f(T) = 0.7. If there are 50,000 sand crabs in each of the populations (100,000 total), how many more CC homozygotes would be observed compared to a population in H-W Eq with no population structure?

Question 7 options:

40,500

27,000

9,000

36,000

40,500

27,000

9,000

36,000

Explanation / Answer

Answer: 36, 000

Population 1--f(C) = 0.9

Population 2--f(C) = 0.3

Average f(C) = 0.12/2 = 0.6

f(CC) = 0.6 * 0.6 = 0.36 =

CC population = 0.36 * 100, 000 = 36, 000

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