| How many pairs of chromosomes are present in human beings? Out of these how many are sex chromosomes? How many types of sex chromosomes are found in human beings? |
| 'The sex of a newborn child is a matter of chance and none of the parents may be considered reponsible for it.' Draw a flow chart showing determination of sex of a newborn to justify this statement. |
Answer:
There are 23 pairs of chromosomes in human beings out of these one pair of sex chromosome is there.
Female has one type of chromosome i.e., X and male has two types of chromosomes i.e., X and Y. Thus, the sex of the child depends on the sex chromosomes of the father.
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