2 ч 52 мин, 30 окт 2001 г. - Zygote is formed.
Описание:
A male and a female go through sexual intercourse. The male gamete or sperm and the female gamete or egg join and form a cell called zygote. Each of the gametes have 23 chromosomes, human zygotes contains 46 chromosomes.Source
"GCSE Bitesize: Formation of Sex Cells." BBC, BBC,
www.bbc.co.uk/schools/gcsebitesize/science/add_edexcel/cells/mitosisrev2.shtml.
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2 ч 52 мин, 30 окт 2001 г.
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