Name: Evolution of Man
Uploaded: 2019-07-19
Duration: 7 min 34 s
Description: The theory of evolution explains how modern species exist. But what about humans? How does this process affect our species? Find these answers in this video!

Question

What is reciprocal cross? Explain the phenotypic and genotypic ratio obtained in offsprings, when F₁ generation is crossed with Homozygous dominant parents.

Accepted Answer

The reciprocal cross involves testing the role of parental sex on the inheritance pattern in breeding experiments. It involves crossing a pair of parents with the sexes reversed resulting in two reciprocal crosses.

For example, it is used if a biologist desired to determine whether a hypothetical allele Z, a variant of some gene A, is on the male or female sex chromosome. If a homozygous tall (TT) plant had crossed with a homozygous dwarf (tt) plant, then in the F₁ generation all plants were hybrid or heterozygous tall (Tt). In heterozygous conditions, both alleles are not impure with one another. At the time of gamete formation, both alleles segregate each other and enter different gametes. Due to this segregation dwarfism (tt), the character reappears similarly in the F₂ generation phenotypic ratio obtained from the F₂ generation is 3:1, and the genotypic ratio is 1:2:1.

What is reciprocal cross? Explain the phenotypic and genotypic ratio obtained in offsprings, when F₁ generation is crossed with Homozygous dominant parents.

Important Questions on Heredity and Evolution

Learn and Prepare for any exam you want !

What is reciprocal cross? Explain the phenotypic and genotypic ratio obtained in offsprings, when F1 generation is crossed with Homozygous dominant parents.

Important Questions on Heredity and Evolution

Learn and Prepare for any exam you want !

What is reciprocal cross? Explain the phenotypic and genotypic ratio obtained in offsprings, when F₁ generation is crossed with Homozygous dominant parents.