Which one of these is found in human males only?
AX-chromosome
BY-chromosome
CXX chromosome
D2X chromosome
Answer & Solution
Correct answer: B. Y-chromosome
1. Human females have the sex chromosomes XX; males have XY.
2. The Y-chromosome is present only in males.
3. Hence the Y-chromosome is found in males only.
_Source: RRB Group D CEN-02/2018 PYQ, Q.99._
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