Question

Explain briefly about coupling and repulsion phases of linkage​

Answer 1

Answer:

When two genes are close together on the same chromosome pair, they do not assort independently. In other words, coupling refers to the linkage of two dominant or two recessive alleles, whereas repulsion indicates that dominant alleles are linked with recessive alleles.

Answer 2

Explanation:

Infectious heredity is a form of non-Mendelian inheritance in which an infectious particle within the cell of the host may bring changes in the phenotype of the host organism, and then pass on the altered phenotype to its offspring. Infective particles may be in the form of viruses within the cells of the host.