Zoology - Principles of Inheritance and Variation Question with Solution | TestHub
In which of these disease's does the patient doesn't have the same number of chromosomes as the rest?
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Answer:
Solution:
The presence of an extra chromosome in diploid chromosome number is called trisomy. It is represented by. Here the patient has 47 chromosomes instead of 46. Trisomy of the 21st pair of chromosome- Down's syndrome. Trisomy of the 18th pair of chromosome- Edward's syndrome. Trisomy of the 13th pair of chromosome- Patau syndrome. Klinefelter's syndrome is due to presence of an extra X chromosome in males. The patient's cells contain one additional X chromosome along with XY. Thus their genotype is represented byand they have 47 chromosomes. The absence of a chromosome in diploid chromosome number is called monosomy. It is represented by `.Thus they have 45 chromosomes. Turner's syndrome is due to absence of one X chromosome in females. The patient's cells contain only one X chromosome instead of two. Thus their genotype is represented by
