How sex is determined in human beings ?explain with the help of flow chart
Answers
Sex determination is a mechanism which determines the individual to be a male or a female based on the sex chromosomes present in it.
Sex chromosomes in sperms determine the baby’s gender. Humans have 23 pairs of chromosomes in each cell. A pair of chromosome forms the sex chromosomes. Males carry XY and females carry XX chromosomes. Reproductive cells give rise to gametes by the division of meiosis. A gamete is a mature reproductive cell - a sperm or an ovum.
If a sperm carrying X fertilises the ovum with X chromosome, then the resulting baby is a girl.
If a sperm carrying Y chromosome fertilises the ovum with X chromosome, then the resulting baby is a boy.
Hence males are responsible for the gender of the newly formed babies. Gender determination of an unborn baby is considered illegal in India.