Question

The kernel color of wheat is determined by how many genes?

Answer 1

Polygenic inheritance:

1. R1 and R2 genes determine the kernel color in wheat.
2. It is an example of polygenic inheritance.
3. In polygenic inheritance, two or more genes influence a single phenotypic character and have a cumulative effect.
4. The red color and its shades are determined by homozygous dominant R1 R2 R1 R2 gene expression while the expression of the heterozygous dominant gene is determined by R1 r2 R1 r2 gene expression.
5. The intensity of the red color in wheat is determined by the number of R genes in the F₂ generation.