1. In a population of cattle the following color distribution was noted: 36% red
ID: 165419 • Letter: 1
Question
1. In a population of cattle the following color distribution was noted: 36% red (RR), 48% roan (Rr), and 16% white (rr). Is this population in Hardy-Weingberg equilibrium?
A. No, because the frequency of red (RR) individuals is predicted to change from 36% to 30%.
B. No, because the frequency of roan (Rr) individuals is not predicted to change.
C. Yes, because the frequency of white (rr) individuals is predicted to change from 16% to 24%.
D. yes, because the frequency of all genotyes is not predicted to change.
2. Which eveolutionary force is important in the creation of new genetic variation in a population?
A. Meitic drive
B. Natural selection
C. Genetic drift
D. Mutation
Explanation / Answer
the population is in hardy weinberg equilibrium.yes because all genotypes are not predicted to change.
36% plant with RR GENOTYPE HAS FREQUENY= .36
48% WITH Rr has frequency= .48
16% rr with frequency=.16
total no of R ALLELE= 36 X2+48= 120
TOTAL NO OF r allele= 16 x2= 32
the frequency of R allele= 120 /200= 0.6 as total 200 alleles are present
frequency of r allele= 80/200= 0.4
now we put the values in hardy weinberg equation and see
p2 + 2pq+q2 =1 if our value match this equation then the population is is hardy weinberg equilibrium
0.6*0.6 +2*0.6*0.4+0.4*0.4 =1 so the population is in equilibrium.
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