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Human chromosome number was determined correctly by
Options
(a) Landsteiner
(b) Moorehead
(c) Tijo and Levan
(d) J.L. Hamerton
Correct Answer:
Tijo and Levan
Explanation:
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
(204)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Evolution of different species in a given area starting from a point and spreading
- In cycas the vascular bundles are arranged in the shape of inverted omega in
- Streptococcus is used in the preparation of
- With the help of DNA ligase donor DNA fragment is joined. It is called
- During meiosis I, the chromosomes start pairing at
Topics: Genetics (204)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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