Principle Of Inheritance And Variation Question 389

Question: Match the column-I with column-II and choose the correct option.

Column-I Columan-II A. Non-parental gene exchange I. Crossing over B. Non-sister chromatids II. X and Y C. Sex chromosome III. Autosome- linked disease D. Thalassaemia IV. Recombination

Options:

A) A-IV; B-I; C-II; D-III

B) A-II; B-I; C-IV; D-III

C) A-II; B-IV; C-III; D-I

D) A-II; B-IV; C-I; D-III

Show Answer

Answer:

Correct Answer: A

Solution:

[a] Crossing over takes place only in non- sister chromatid.

In sisters chromatids, the crossing over does not take place.

Non Parental gene exchange ? Recombination Non sister chromatid - Crossing over Sex Chromosome - X and Y Thalassaemia - Autosome-linked recessive disease.