A $15 : 1 F_{2}$ ratio of a cross between a wheat variety with red kernels (homozygous for two dominant genes) and another with white kernels shows

Polygenic inheritance

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That the two genes are complementary

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Single factor inheritance

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That it is a tes cross

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Solution

The correct option is A Polygenic inheritance

E.Nilsson – Ehle crossed red kernelled variety with white kernelled variety of wheat. The grains of F₁ were self crossed among themselves, five different phenotypic classes appeared in F₂ showing the ratio of 1:6:15:20:15:6:1.

These scientist found that the kernel colour in wheat is determined by two pairs of genes A and B. It is called polygenic inheritance.
So, the correct option is ‘polygenic inheritance’.

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Similar questions

Q. When a wheat variety of red kernels (homozygous for two nonallelic and independent dominant genes) is crossed with white kernelled wheat (homozygous for two recessive nonallelic independent genes), the phenotypic ratio in

F_{2}

generation would be

Q. In a cross between red kernelled and white kernelled varieties of wheat showing polygenic inheritance the phenotypic ratio of

F_{2}

generation will be

Q. When a wheat variety of red kernels is crossed with white kerneled wheat, the F₂ ratio would be (it is a polygenic trait controlled by 2 pairs of polygenes).

A plant has two varieties, one with red petals and the other with white petals. When these two varieties are cross-pollinated, all the offsprings have red petals ?

(a) Which gene is dominant ?

(b) Choose suitable letters to represent the two genes.

Q. A gene for corn has two alleles, one for yellow kernels and one for white kernels. Cross pollination of yellow corn and white corn results in ears of corn that have an approximately even mix of yellow and white kernels. Which term best describes the relationship between the two alleles?

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A 15:1F2 ratio of a cross between a wheat variety with red kernels (homozygous for two dominant genes) and another with white kernels shows

A $15 : 1 F_{2}$ ratio of a cross between a wheat variety with red kernels (homozygous for two dominant genes) and another with white kernels shows