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Snapdragons have a pattern of heredity for flower color called incomplete dominance. If the flower-color genotypes are known in a population
of snapdragons, you can calculate the allele frequencies for the flower-color alleles R and R'.
What are the frequencies of the R and R' alleles in this population? Assume the conditions of Hardy-Weinberg equilibrium apply.
0.75
0.50
0.25
0.125
Genotype frequency Allele frequency
RR = red -0.5625 R =
RR' = pink = 0.375
R'R' = white = 0.0625 R' =

Respuesta :

The frequencies of R is 0.75 and the frequencies for R' is 0.25.

Explanation:

Data given:

Genotype frequency of incomplete dominance on flower colour of snapdragon:

RR = red 0.5625

RR' = Pink 0.375

R'R' = 0.0625

frequency of R and R'=?

According to Hardy-Weinberg equilibrium the genetic variation in  a given population is constant from one generation to other if no factors causing evolution or genetic drift is there. So,

[tex]p^{2}[/tex] + [tex]q^{2}[/tex]+ 2pq = 1

The p represents = homozygous dominant  RR

q represents = homozygous recessive   R'R'

2pq = frequency of heterpzygous genotype RR'

[tex]p^{2}[/tex] = 0.5625

p = 0.75   (frequency of R)

[tex]q^{2}[/tex] = 0.0625

q = 0.25  (Frequency of R')

Their sum is 1 as according to Hardy Weinberg condition:

p+q = 1

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