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Down’s syndrome in humans is due to
Options
(a) Two ‘Y’ chromosomes
(b) Three ‘X’ chromosomes
(c) Three copies of chromosomes 21
(d) Monosomy
Correct Answer:
Three copies of chromosomes 21
Explanation:
Down’s syndrome is the chromosomal disorders due to the presence of an additional copy of the chromosome. Number 21 (trisomy of 21). The affected individual is short saturated with small round head, furrowed tongue and partially open mouth and mental development is retarted.
Related Questions: - Select the taxon mentioned that represents both marine and freshwater species
- Two cells are connected with the help of
- According to Central Pollution Control Board (CPCB), which particulate
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- Which one of the following statements in regard to the excretion by the human kidneys
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Genetics
(204)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Select the taxon mentioned that represents both marine and freshwater species
- Two cells are connected with the help of
- According to Central Pollution Control Board (CPCB), which particulate
- The abiogenisis occurred about how many billion years ago
- Which one of the following statements in regard to the excretion by the human kidneys
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Genetics (204)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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