Explain the mechanism of sex determination in human beings
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Answer: In humans there are are 23 chromosomes in each cell. Of these , 22 pairs are of the same types in males and females . The 23rd pair is different n males and females . They are called the sex chromosomes X and Y . In females cells these are two X and in males one X and one Y chromosome in the cells .
During the gamete formation , only half of the chromosomes are passed that is 23 chromosomes in female gamete , there is only one X chromosomes and in males there is either X or Y chromosomes . when an ovum and sperm fuses , the zygote gets 23 pairs of chromosomes .
50% chance for male and female baby . sex chromosomes of father determines the sex of the baby
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