Inheriting Chromosomes

Genetics as it applies to evolution, molecular biology, and medical aspects.

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Lenore
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Inheriting Chromosomes

Post by Lenore » Fri May 09, 2008 9:00 pm

What is the probability you receive exactly 8 of your autosomes from your mother's mother and 14 from your mother's father?

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mith
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Post by mith » Fri May 09, 2008 10:08 pm

Zero.
Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
~Niebuhr

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MrMistery
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Post by MrMistery » Sat May 10, 2008 9:16 am

not quite 0, but very small anyway...
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F4T32008
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Re: Inheriting Chromosomes

Post by F4T32008 » Sun May 11, 2008 4:04 pm

Lenore wrote:What is the probability you receive exactly 8 of your autosomes from your mother's mother and 14 from your mother's father?


Can we really inherit the chromosomes from our mother's mother and our mother's father?

Because I only know that we can inherit chromosomes from our parents.

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MichaelXY
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Post by MichaelXY » Sun May 11, 2008 11:37 pm


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MrMistery
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Post by MrMistery » Mon May 12, 2008 5:40 pm

i think it asks for maternal chromosomes that your mother originally inherted from her mother/father
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Post by tittu » Tue May 13, 2008 2:20 am

Total possibilities = 2^22 = 4194304 , because any one of your 22 maternal autosomes has 2 possible sources.
Favourable cases = 22C8 (the binomial coefficient, factorial 22/(factorial 8 x factorial 14) ) = 319770 (ways to select which 14, or which 8 from where.)
So total probability = (319770/2^22) = (319770/4194304) = 0.07623
About 7 %

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