Free Principles Of Inheritance And Variation (Daily Quiz: 12) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

A pedigree is shown below for a disease that is autosomal dominant. The genetic makeup of the first generation is

(a) Aa, aa

(b) AA, Aa

(c) Aa, AA

(d) Aa, Aa

Question-2

If a genetic disease is transferred from a phenotypically normal, but carrier female to only some of the male progeny, the disease is

(a) autosomal recessive

(b) autosomal dominant

(c) sex-linked dominant

(d) sex-linked recessive

Question-3

A common test to find the genotype of a hybrid is by

(a) crossing of one $F_1$ progeny with male parent

(b) studying the sexual behaviour of $F_1$ progenies

(c) crossing of one $F_2$ progeny with female parent

(d) crossing of one $F_2$ progeny with male parent

Question-4

In Mendel’s experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the $F_{2}$ generation of the cross RR YY × rryy ?

(a) Only wrinkled seeds with both yellow cotyledons.

(b) Only wrinkled seeds with green cotyledons.

(c) Only round seeds with yellow cotyledons.

(d) Round seeds with yellow cotyledons and wrinkled seeds with green cotyledons.

Question-5

Blue eye colour is recessive to brown eye colour. A brown eyed man whose mother was blue eyed marries a blue eyed women. The children shall be

(a) all blue eyed

(b) all brown eyed

(c) both blue eyed and brown eyed 1 : 1

(d) blue eyed and brown eyed 3 :1