NEET 2008
- Exam
- NEET
- Year
- 2008
- Subject
- Zoology
- Chapter
- Principles of Inheritance and Variation
NEET 2008 · Zoology · Principles of Inheritance and Variation
Which one of the following condition in humans is correctly matched...
Which one of the following condition in humans is correctly matched with its chromosomal abnormality/linkage?
Options
- AKlinefelter's syndrome-44 autosomes
- BColourblindness - Y-linked
- CErythroblastosis foetalis-X-linked
- DDown syndrome-44 autosomes + XO
Correct answer
A. Klinefelter's syndrome-44 autosomes
Step-by-step solution
Klinefelter's syndrome is represented by 44 autosomes + XXY. When an abnormal egg with chromosome is fertilized by a sperm carrying Y-chromosome a zygote having sex chromosomes is formed. The resulting young one is an abnormal sterile male.
The 44 autosome + XO condition is due to Turner's syndrome. Such females are sterile and have short stature, webbed neck, broad shield-shaped chest etc.
Down's syndrome is due to trisomy of pair of chromosome. It is characterised by moderate mental retardation, large tongue, short stature, stubby fingers, an enlarged liver and spleen.
Colourblindness is an X-linked disease. The person suffering from this disease cannot differentiate between red and green colours.
Erythrobalstosis-foetalis is caused due to factor in child of man and woman.