Biology Chapter Chromosome and DNA Mcqs - mcqsall.com

Biology MCQs

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#49
The number of chromosomes in Down's syndrome is

A) 2n-1

B) 2n+2

C) 2n+1

D) n+1

Answer: C

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#50
In mitochondria UGA condon specify

A) Arginine

B) Valine

C) Tryptophan

D) None of these

Answer: C

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#51
Which one of the following disorder is not due to non-disjunction of chromosomes?

A) PKU

B) Down's syndrome

C) Turner's syndrome

D) Klinefelter's syndrome

Answer: A

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