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Name: L. Austin
Status: Student
Age: 16
Location: N/A
Country: N/A
Date: December 2004


Question:
Is sperm production in human males asexual or sexual?



Replies:
The terms sexual and asexual do not apply to the process of spermatogenesis in humans. This process occurrs by meiosis, which is the result of two cell divisions accompanied by only one suplication of chromosomes which effectively halves the number of chromosomes. These haploid sperm cells combine with haploid ova resulting in sexual reproduction. Sexual means reproduction involving the fusion of haploid cells from two different parents. Asexual reproduction occurrs primarily in single-cell organisms.

Ron Baker, Ph.D


You need to be more specific in your question. If you are asking, are sperm produced by mitosis or meiosis?, the answer is meiosis. This is a type of nuclear division where the cells created have half the number of chromosomes so half the genetic information is passed on to the offspring. This prevents doubling of the chromosome number with each generation. Sperm are created in the male to provide his half of the genetic material during sexual reproduction-where the sperm and egg unite to form one cell and each contribute half of the genetic information.

You may also be wondering where the cells come from that begin developing into sperm. Those are actually produced by mitosis of precursor cells. In males these cells are called spermatogonia. They are kind of like stem cells for sperm. In females these are called oogonia. These cells have to be there because sperm and eggs themselves don't divide to produce more sperm or eggs and we also know that the sperm and eggs (if they aren't fertilized) are eventually going to leave the body.

If that isn't what you were asking, you need to think about it and ask a more specific question.

vanhoeck


The production of sperm in humans occurs by meiosis, a type of cell division found in sexual life cycles. Thus, sperm production is part of a sexual life cycle.

Christopher Perkins



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