In some flowers, a purple pigment is synthesized from a red precursor pigment. In the absence of all pigment, flowers are white. A pure-breeding plant with red flowers was crossed to a pure-breeding plant with white flowers. All of the F 1 plants had white flowers. The F 1 plants were crossed to each other, and the F 2 consisted of 165 plants: 123 with white flowers, 32 with purple flowers, and 11 with red flowers. How do these results suggest that flower color is determined

Recessive epistasis

Explanation:

Epistasis is a gene interaction it influences a phenotype. Genes can mask each other effect with one been dominant over the other or they can both be expressed to produce a new trait.

It is the conditional relationship between two genes that can determine a single traits. When there are two alleles that dictate phenotypes they can affect one another such that allele of one gene is recessive to one that is a dominant allele over the other.

A recessive epistasis occur when a recessive allele mask the expression of both recessive and dominant allele of another locus. Allele for white color mask the effect of other alleles expressing itself over them to give a phenotypic ratio of 9:3:4 a deviation from normal mendelian principle.

When a dominant allele masks the effect of both dominant and recessive alleles at another locus, it is a dominant epistasis.

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.