Question

$A$. DNA polymorphism plays important role in evolution and speciation.
$B$. $99.9\%$ nucleotides bases are exactly same in all people.
$C$. Chromosome $1$ has the fewest genes $(23)$ and $Y$-chromosome has most genes ($2968$)
$D$. $BAC$ and $YAC$ have been used in Human Genome Project.

• A. All are correct
• B. All are incorrect
• C. A, B, D are correct
• D. B, C, D are. correct

Answer 1

Answer: (C)

Correct answer is (c) A, B, D are correct