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FERTILISATION
ANS002
Fall 2012
REPRODUCTIONReproduction is the biological process by which new
"offspring" are produced from their "parents”
Two main types: sexual and asexual
Sexual reproduction typically requires the involvement of two gametes, one each from opposite type of sex
REPRODUCTION
Why is it important?
FERTILISATION
Fertilisation is the fusion of gametes to
produce a new organism.
Sperm – male gamete
Motility Sperm provides half of the
genome for an offspring
Source: http://www.art.com/products/p357047991-sa-i4006854/david-phillips-human-sperm-or-spermatozoa-showing-the-heads-midpieces-and-long-flagella-sem.htm
Hormone of male reproduction
Testosteron
Oocyte – Female gameteProvides:half of the genomenutrition, other factors needed for development
Source: http://www.ansci.wisc.edu/jjp1/ansci_repro/lab/lab10/maturation3.html
Hormone of female reproductionFollicle stimulating
hormone - FSHLuteinizing hormone – LHIn accordance with ovary
cycle, menstrual cycleImportant in assisted
reproductive technology
FERTILISATIONFertilisation is the
fusion of gametes to produce a new
organism.
The human oocyte at the moment of fertilization.Image: National Museum of Health and Medicine
One and only one sperm can penetrate and fertilize with the oocyte
Development stages
Development of the Preimplantation Blastocyst in Humans.(© 2001 Terese Winslow)
http://www.sciencephoto.com/image/290575/large/M8150307-Newborn_baby_after_Caesarean-SPL.jpg
Welcome to the world!!!
Short animated video of human fertilization process
Remember quiz on next class
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