12th Biology Important Questions UP Board. We covered all the 12th Biology Important Questions UP Board MCQs in this post for free so that you can practice well for the exam.
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12th Biology Important Objective Questions UP Board for Students
In the context of genetic disorders, consider the following. A woman suffers from color blindness, while her husband does not suffer from it. They have a son and a daughter. In this context, which one of the following statements is most probably correct?
(a) Both children suffer from color blindness.
(b) Daughter suffers from color blindness while son does not suffer from it.
(c) Both children do not suffer from color blindness.
(d) Son suffers from color blindness, while daughter does not suffer from it.
Option d – Son suffers from color blindness, while daughter does not suffer from it
Down’s syndrome is characterized by
(a) 21st trisomy
(b) two X and Y-chromosomes
(c) 19 trisomy
(d) only one X-chromosome
Option a – 21st trisomy
Gaucher’s disease is associated with abnormal metabolism of
(a) fat
(b) nucleic acid
(c) protein
(d) carbohydrate
Option a – fat
The absence of the Y-chromosome in human beings causes
(a) Turner’s syndrome
(b) Klinefelter’s syndrome
(c) Down’s syndrome
(d) No abnormality
Option a – Turner’s syndrome
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