Question

Sex- determination, in Humans is identified by :

• A. Somatic cell → autosomes
• B. Germ cell → sex chromosome
• C. Germ cell → autosomes
• D. Somatic cell → sex chromosomes

Answer 1

The Correct Option is B

The correct answer is option (B): Germ cell → sex chromosome
Human sex is determined using the XY sex-determination mechanism. The formation of the phenotypic distinctions between male and female humans from an undifferentiated zygote is the result of intricate procedures. Chromosomes are found in the nucleus of a cell. In humans, there are typically 23 pairs of chromosomes, 22 of which are autosomes, and the last pair, which defines the individual's sex. Males have pairs of XY chromosomes, whereas females have XX chromosomes. At the moment of fertilisation, an individual's sex is decided when an X or Y chromosome from the sperm cell fuses with the X chromosome in the egg cell. The gender of the baby is decided by which sperm fertilises the egg. The kid will be a female if the egg is fertilised by sperm that has the X chromosome. A male will be born if sperm carrying the Y chromosome fertilises the egg.