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Sexual reproduction

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Sexual reproduction

Postby biology_is_power » Wed Apr 05, 2006 12:30 am

How come there are no two products of sexual reproduction that are identical? (except for identical twins which are rare)
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Postby canalon » Wed Apr 05, 2006 2:56 am

Hint: meiosis
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Postby 2810712 » Wed Apr 05, 2006 6:53 am

The possible types of chromosomal combinations resulted from a fertilization/syngamy without considering crossing over are equal to the n'th power of 4 [ n is the no. homologous chromosome pairs in a diploid cell]
For humans it is 4 raised to the power 23 multiplied by and...as it is so large generally for most of the sexual reproduction [ also consider the crossing overs and mutations] the probability of getting the same combo is very less.

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Last edited by 2810712 on Thu Apr 20, 2006 2:05 pm, edited 1 time in total.
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Postby biology_is_power » Wed Apr 05, 2006 3:43 pm

ohh i see. so the chances are extremely less. thanks
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