Question

Andaulusian fowl exhibits
(A) Blending inheritance
(B) Mosaic inheritance
(C) Epistasis
(D) Co- dominance

Answer 1

Hint: The Andaulusian fowl also known as blue Andaulusian is the one of the breeds of the domestic chicken. This breed is indigenous to Spain. Many breeds of this fowl are produced by the crossing between themselves. They are either black, blue or the white feathered.

Complete answer:
This type of the bird exhibits the blending inheritance and it is also commonly caused by incomplete dominance. The blending inheritance is the transferring of any values of the parent may be dominant or the recessive to its offspring. This breed is obtained by the interaction between the two breeds where both of their genes exhibit its own individual character. The result of this breeding, the new intermediate character is produced.

This is because the dominant gene in both the organisms does not suppress all the characters of the recessive genes. In this breed of the Andaulusian fowl, the cross is made between the fowls of the black and the white feathers. The result obtained from the cross is the blue feathered fowl. When this obtained blue feathered fowl is made to undergo self-fertilization, the breeds of the fowl with the black, blue and the white feathers appear in the ratio of $1:2:1$.

Thus, the correct answer is option (A).

Note:By using the process of the selective breeding and the cross breeding between the one breed of the fowl and the other breed of the fowl, the new type of the Andaulusian was created with the blue and the blue laced plumage. This discovery of new variety was made in England.