Free Principles Of Inheritance And Variation (Daily Quiz: 9) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Out of the three alleles of gene I, the sugar polymers on the plasma membrane of RBCs is controlled by how many alleles?

(a) Two

(b) All three

(c) One

(d) O

Question-2

Which of the following statements is not true of two genes that show 50% recombination frequency?

(a) The genes show independent assortment

(b) The genes are tightly linked

(c) If the genes are present on the same chromosome, they undergo more than one crossover in every meiosis

(d) The genes may be on different chromosomes

Question-3

Pick out the correct statements.

1. Haemophilia is a sex-linked recessive disease.
2. Down's syndrome is due to aneuploidy.
3. Phenylketonuria is an autosomal recessive gene disorder.
4. Sickle cell anaemia is an X-linked recessive gene disorder.

(a) (1), (2) and (3) are correct.

(b) (1), (3) and (4) are correct.

(c) (1) and (4) are correct.

(d) (2) and (4) are correct.

Question-4

A cross between pure tall pea plant with green pods and dwarf pea plant with yellow pods will produce dwarf F2 plants out of 16

(a) 4

(b) 3

(c) 9

(d) 1

Question-5

Assertion:
Increase in a whole set of chromosome in an organism is known as polyploidy.
Reason:
Failure of cytokinesis after telophase stage of cell division results in polyploidy.

(a) If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

(b) If both the assertion and the reason are true and the reason is a correct explanation of the assertion.

(c) If the assertion is true but the reason is false.

(d) If both the assertion and reason are false.