Question

Tizo and Levan's contribution is very significant because they [CBSE PMT 1993]
A) Gave the number of human chromosomes
B) Pointed out mutational changes
C) Identified Barr bodies
D) Detected sex linkage

Answer 1

hey hi..


the correct answer is option A.


>>>Tizo and Levan in 1956 enabled the human geneticists to ascertain the correct chromosome number.<<<

hope this helps....

Answer 2

Tizo and Levan's contribution is very significant because they [CBSE PMT 1993]
A) Gave the number of human chromosomes✔✔
B) Pointed out mutational changes
C) Identified Barr bodies
D) Detected sex linkage