Question

Andalusian fowl exhibits
A. Blending inheritance
B. Mosaic inheritance
C. Epistasis
D. Codominance

Answer 1

Hint: One of the breeds of domestic chicken is the Andalusian fowl, also known as the blue Andalusian. Spain is indigenous to this breed. The crossing between them creates several breeds of this fowl. They are either black, blue, or feathered in white.

Complete answer:
The Andalusian fowl reveals the heritage of mixing. It is often referred to as incomplete domination. It is an interaction in which both genes express a mixture of their individual existence, which is represented as an intermediate character. This happens because the dominant gene does not fully inhibit recessive gene expression. If there is a cross between black-feathered fowl and white feathered fowl in Andalusian fowl, fowls in F1. It has a feathered blue look. The blue fowls develop black, blue, and white feathers in a 1: 2: 1. ratio when self-fertilized. The blending inheritance exhibits this type of bird and it is also generally induced by incomplete dominance. The inheritance of blending is the transition to its offspring of any parent values that may be dominant or recessive. The contact between the two breeds, where both of their genes show their own individual character, creates this breed. The effect of this breeding is the development of a new intermediate character. This is because all the characters in the recessive genes are not suppressed by the dominant gene in both species. The cross is made between the black and white feathers of the fowls in this breed of the Andalusian fowl. The blue feathered fowl is the product obtained from the cross.

F2 Generation:

	B	b
B	BB	Bb
b	Bb	bb

Phenotypic ratio
Black: blue: White
1 : 2 : 1
Genotypic ratio
BB: Bb: bb
1 : 2 : 1
Hence, the correct answer is option A.

Note: By using the selective breeding and cross-breeding method between the one fowl breed and the other fowl breed, the blue and the blue laced plumage were produced with the new form of the Andalusian. The new variety of discovery was made in England.