Question

In the following figure, two ways of pairing of two homologous pairs of chromosomes are shown. Which of the following phenomena is expressed?

Options

• Linkage of genes

• Independent assortment of genes

• Multiple alleles

• Incomplete dominance

Answer 1

Independent assortment of genes

Explanation:

The figure shows two equally probable orientations of two homologous chromosome pairs at metaphase I; their independent alignment produces different combinations of parental chromosomes in gametes. This random orientation at metaphase I (illustrated by dihybrid/test-cross outcomes) is the basis of independent assortment.