Explain sex detamination in human being
Answers
Explanation:
Human beings have 23 pairs of chromosomes out of which 22 pairs are autosomes and one pair (23rd pair) is the second chromosome.The female gametes or the eggs formed are similar in their chromosome type ( 22+xx).Therefore human females are homogametic.
The male gametes or sperms produced are of two types.They are produced bin equal produced in equal proportions.The sperm bearing (22+x) chromosomes and the sperm bearing (22+y) chromosomes.The human males are called heterogametic.
It is a chance of probability as to which category bof sperm fuses with the egg .If the egg (x) is fusef by the X- bearing sperm an xx individual (female) is produced.If the egg (x) is fused by the y- bearing sperm an xy individual ( male) is produced.The sperm , produced by the father determines the sex of the child.The mother bis not responsible in determining the sex of the child.
Now let's see how the chromosomes take part in this formation.Fertilization of the egg (22+x) with a sperm (22+x) will produce a female child (44+xx). While fertilization of the egg (22+x) with a sperm (22+y) will give rise to male child (44+xy).