Multiple choice

Directions: Read the following information and answer the given question.

Mrs. Gupta was expecting from the last one month. Both Mrs. and Mr. Gupta went to a maternity hospital. They expressed their desire to know the sex of their unborn child to the concerned doctor. The doctor refused to comply to this request. They even tried to bribe the doctor, but he disagreed.

Which of the following represents the correct description of sex chromosomes in humans?

  1. XX - female, XY - male

  2. XY - female, XX - male

  3. It can’t be determined

  4. XO - female, XXY - male
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In humans, females have two X chromosomes (XX) while males have one X and one Y chromosome (XY). This XY sex determination system is fundamental to human biology. The Y chromosome carries the SRY gene which triggers male development. Options B, C, and D are incorrect - XY-XX is reversed, the sex CAN be determined genetically, and XO/XXY are rare chromosomal variations, not the normal human pattern.

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