Question

How is sex determined in human beings?

How is sex determined in human beings?

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Answer #1

Answer:

  • Sex of a baby is determined at the time of conception and genetic factors play a critical role.
  • Humans have XX-XY sex determination system (Female contain XX chromosome in the allosome pair and Male contains XY chromosome in the allosome pair). The presence of SRY gene (sex determining region) on the Y chromosome determines maleness. This gene is Y linked as it is present only on the Y chromosome.
  • In males, the SRY gene is involved in the activation of different other genes that causes the development of gonads as testes. On the other hand, in female since SRY gene is absent therefore gonads develop as ovaries.
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