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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.
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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
- Corpus luteum secretes
- Which one of the following plants is monoecious?
- A biologist studied the population of rats in a barn
- Conifers differ from grasses in the
- Which of the following is related with vitamin B₂?
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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