A population of cats has the following genotypes for an X-linked coat-color trait (O for the dominant brown allele, o for the recessive orange allele): Brown homozygous females: 30 Brown heterozygous females: 75 Orange females: 10 Brown males: 50 Orange males: 65 What are the allele frequencies in this population

Respuesta :

Answer:

Allele frequency for brown fur color [tex]0.43[/tex]

Allele frequency for orange fur color [tex]0.570[/tex]

Explanation:

Given

"O" denotes dominant brown allele

and "o" denotes recessive orange allelehe

The trait "coat color" is linked with X gene

Brown homozygous females: 30

Brown heterozygous females: 75

Orange females: 10

Brown males: 50

Orange males: 65

Allele frequency for orange color

[tex]\frac{10+65}{30+75+10+50+65} \\= \frac{75}{230} \\= 0.3260\\[/tex]

Thus [tex]q = \sqrt{0.3260} \\q = 0.570\\[/tex]

Allele frequency for orange fur color [tex]0.570[/tex]

Allele frequency for brown color

[tex]p = 1-q\\= 1- 0.570\\= 0.43[/tex]

Allele frequency for brown fur color [tex]0.43[/tex]