Question

explain reproduction in human beings

Answer 1

Human reproduction is any form of sexual reproduction resulting in human fertilization, typically involving sexual intercourse between a man and a woman. During sexual intercourse, the interaction between the maleand female reproductive systems results in fertilization of the woman's ovum by the man's sperm. These are specialized reproductive cells called gametes, created in a process called meiosis. While normal cells contains 46 chromosomes, 23 pairs, gamete cells only contain 23 chromosomes, and it is when these two cells merge into one zygote cell that genetic recombination occurs and the new zygote contains 23 chromosomes from each parent, giving them 23 pairs. After a gestation period, typically for nine months, is followed by childbirth. The fertilization of the ovum may be achieved by artificial insemination methods, which do not involve sexual intercourse.

Answer 2

Reproduction is process in which organism produce its own individuals. In humans reproduction is sexual. Male produces sperms and female produces ova. But only one sperm get chance to fuse with ovum( egg ). Such fusion is called fertilization. Nuclei of sperm fuses with egg to form a single nucleus. This developing structure is called zygote. The zygote ensure the further development of unborn baby.