Question

Statement I: Chromosome $1$ has $231$ genes and the $Y$ has $2968$ genes.
Statement II : Repetitive sequences of DNA are thought to have direct coding function and shed light on chromosome structure, dynamics and evolution

• A. Only statement I is correct
• B. Only statement II is correct
• C. Both statements I and II are correct
• D. Both statements I and II are incorrect

Answer 1

Answer: (D)

• Chromosome $1$ has most genes $(2968)$, and the $Y$ has the fewest $(231)$.
• Repetitive sequences are stretches of DNA sequences that are repeated many times, sometimes hundred to thousand times. They are thought to have no direct coding functions, but they shed light on chromosome structure, dynamics and evolution.