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In peas, a gene controls flower color such that R = red(dominant) and r = white

ID: 5548 • Letter: I

Question

In peas, a gene controls flower color such that R = red(dominant) and r = white (recessive). In an isolated pea patch of100 flowers, there are 9 plants with white flowers. AssumingHardy-Weinburg equilibrium, how many plants are heterozygous? PLEASE SHOW YOUR WORK. In peas, a gene controls flower color such that R = red(dominant) and r = white (recessive). In an isolated pea patch of100 flowers, there are 9 plants with white flowers. AssumingHardy-Weinburg equilibrium, how many plants are heterozygous? PLEASE SHOW YOUR WORK.

Explanation / Answer

In peas, a gene controls flower color such that R = red(dominant) and r = white (recessive). In an isolated pea patch of100 flowers, there are 9 plants with white flowers. AssumingHardy-Weinburg equilibrium, how many plants are heterozygous? RR-red (dominant) Rr----heterozygous rr-white (recessive). FREQUENCY OF r = square root of =9/100=.3 p+q=1 p=.1- .3= .7 2pq= heterozygous= 2 x .3 x .7= .42 RR-red (dominant)= =.7 x.7= .49 rr-white (recessive).=.3x .3 = .09 answer = 0.42 x100=42