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SSC MTS 2019 PYQ — Question 44

SSC MTS Previous Year - 07 August 2019 - Shift 1 • General Awareness • Q44

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What combination of paternal chromosome results in a female?

Show answer & explanation

Correct answer: B

Explanation

Correct Answer is option 2 i.e. XX

  • The sex of an individual is determined by a pair of sex chromosomes.
  • Females typically have two of the same kind of sex chromosome (XX), and are called the homogametic sex.
  • Males typically have two different kinds of sex chromosomes (XY), and are called the heterogametic sex.
  • In humans, the presence of the Y chromosome is responsible for triggering male development; in the absence of the Y chromosome, the fetus will undergo female development.
  • Hence, X – X combination of paternal chromosome results in a female.