| ⇦ | 
| ⇨ |
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: - The scutellum obsorved in a grain of wheat or maize is comparable to which part
- If two solutions have the same osmoregularity, they are said to be
- Middle lamella is composed mainly of:
- Which of the following groups of cells in the male gonad, represent haploid cells?
- Apparatus to measure rate of respiration and R.Q is
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
- The scutellum obsorved in a grain of wheat or maize is comparable to which part
- If two solutions have the same osmoregularity, they are said to be
- Middle lamella is composed mainly of:
- Which of the following groups of cells in the male gonad, represent haploid cells?
- Apparatus to measure rate of respiration and R.Q is
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
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply