The average area of black coloration on a black and white cat is under genetic c

Question

The average area of black coloration on a black and white cat is under genetic control. The average area of black pigments is 59.3%. The phenotypic variance is 188.7.

a) If cats with an average black area of 70% are bred, the kittens have an average area of 65%. What is your estimate of the heritability (h^(2)) for this character in cats?

b) What is your estimate of the genetic variance, VG, for this characteristic?

c) If your were to instead select cats with an average of 35% black color and breed them, what would predict the average area of black to be on the progeny?

Explanation / Answer

h2= selection response/ selection differential

a) Thus, h2 = (next gen average) -(original aver)/ (selected gen aver) -(original aver)

    = 65-59.3/ 70-59.3

    = 5.7/10.7

    h2 = 0.532

c) if the selected parent generation was 35% black color

then, h2= 65-59.3/ 35- 59.3

h2= -0.235

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