Tizo and levan's contribution is very si...

Tizo and levan's contribution is very significant becasuse they

A

Gave the number of human chromosomes

B

Pointed out mutational changes

C

Detected sex linkage

D

linked genes

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The correct Answer is:

A

(a) Tizo and Levan (pant cytologists ) in 1956 enabled the human geneticists to ascertain the correct chromosome number .

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