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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.
Related Questions: - Which of the following is the most stable ecosystem?
- Rarely among angiosperms the pollen grain develops in embryo sac. This abnormally
- Excretory system of Ascaris lumbricoides is made up of
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Topics: Genetics
(204)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following is the most stable ecosystem?
- Rarely among angiosperms the pollen grain develops in embryo sac. This abnormally
- Excretory system of Ascaris lumbricoides is made up of
- According to the modern concept of cellular membranes the structure
- The organisms separated by geographical barriers are termed
Topics: Genetics (204)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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