The principles that determine the inheritance of quantitative characteristics are the same as the principles that determine the inheritance of discontinuous characteristics, but more genes take part in the determination of quantitative characteristics.
-Briefly explain how the number of genes influencing a polygenic trait can be determined?

Question

Quizplus · Accepted Answer

The Answer is Cross two individuals that are each homozygous for different genes affecting the traits and then intercross the resulting

F_1

progeny to produce the

F_2

. Determine what proportion of the

F_2

progeny resembles one of the original homozygotes in the P generation. This proportion should be

(1/4)^n

, where n equals the number of loci with a segregating pair of alleles that affect the characteristic.

The Principles That Determine the Inheritance of Quantitative Characteristics Are