Question

An individual that is heterozygous for two independent traits has the potential to produce gametes with more combinations of genotypes for those two traits than an individual that is only heterozygous for one of the two traits.

True

False

Answer 1

An individual that is heterozygous for two independent traits has the potential to produce gametes with more combinations of genotypes for those two traits than an individual that is only heterozygous for one of the two traits

ANSWER : True

Consider a situation:

Two genes for two trait of pea seed:  shape and color

1. For the shape, there are two alternative forms are possile ROUND and WRINKLE, which is represented by R and r respectively. R is dominant over r.
2. For color, the two alternative forms are YELLOW and GREEN, which is represented by Y and y. Y is dominant over y.

If an individual plant is heterozygous for both gene:   Rr Yr

	Y	y
R	RY	Ry
r	rY	ry

Four different gametes are produced.

If an individual plant is heterozygous for one gene only: RR Yr OR    rr Yr

For RR Yr

	Y	y
R	RY	Ry
R	RY	Ry

Two types of gamete produced

For rr Yr

	Y	y
r	rY	ry
r	rY	ry

Two types of gamete produced