Human chromosome number was determined correctly by

Human Chromosome Number Was Determined Correctly By Biology Question

Human chromosome number was determined correctly by


(a) Landsteiner
(b) Moorehead
(c) Tijo and Levan
(d) J.L. Hamerton

Correct Answer:

Tijo and Levan


Tijo and Levan in the year 1956 determined the human chromosome number correctly. In human beings there are 23 pairs of chromosomes of which 22 pairs are autosomes and 1 pair is of sex-chromosomes. The autosomes are homologous while the sex-chromosomes are same in females (XX) but different in males (XY). Sex-chromosomes are also called heterosomes or allosomes.

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Topics: Genetics (205)
Subject: Biology (4113)

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