Question

what is the difference between complete and incomplete linkage

Answer 1

Hello friend


Complete linkage- When the genes are tightly linked, resulting in very low percentage of recombination.In such condition, only parental or new cross over type of gametes are formed.

Incomplete linkage- When the genes were loosly linked on a chromosome and show higher percentage of recombination. In such condition non parental type of gametes are formed.

Hope it helps u .

Answer 2

Answer: By Wada Akogwu

The genes located on the same chromosome do not separate and are inherited together over the generations due to the absence of crossing over. Complete linkage allows the combination of parental traits to be inherited as such. It is rare but has been reported in male Drosophila and some other heterogametic organisms.

Explanation:

Example :

A red eyed normal winged (wild type) pure breeding female Drosophila is crossed to homozygous recessive purple eyed and vestigial winged male. The progeny or F1 generation individuals are heterozygous red eyed and normal winged. When F1 males are test crossed to homozygous recessive female (purple eyed and vestigial winged), only two types of individuals are produced— red eyed normal winged and purple eye vestigial winged in the ratio of 1 : 1 (parental phenotypes only). Similarly during inbreeding of F1 individuals, recombinant types are absent. In practice, this 1: 1 test ratio is never achieved because total linkage is rare.