need help with a question i have

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Mosier09
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need help with a question i have

Post by Mosier09 » Fri Nov 13, 2009 12:18 am

A mouse breeder has a strain of black mice that normally breed true and produce only black mince. Occasionally, however, a brown mouse or two has appeared in litters of some of the mice.
A) what do you hypothesize as the cause of the appearance of the brown coat color?
a) both parents are heterozygous (not sure if thats right)
B) If the brown mice are killed as soon as they are born, how many generations will it take to completely eliminate the bron gene?
b) im completely lost, we just started this a few days ago. can someone shed some light on how i can figure this out? any imput in the right direction would be apperciated. thank you

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mith
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Post by mith » Fri Nov 13, 2009 2:25 am

I think you also need to mention the type of dominance. For the second part, draw out some punnet squares.
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Darby
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Post by Darby » Sat Nov 14, 2009 7:25 pm

Since you can only eliminate the allele when you see it, and it's recessive, could you actually eliminate it?

Mosier09
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Post by Mosier09 » Sat Nov 14, 2009 11:03 pm

see i have no idea...this is exactly what it looks like from my paper...i dont know how to solve it.

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mith
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Post by mith » Sun Nov 15, 2009 12:50 am

has it occurred to you that you can't eliminate it using above method?
Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
~Niebuhr

Mosier09
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Post by Mosier09 » Sun Nov 15, 2009 8:11 pm

that was the first thing that came to mind when i saw this problem...but i wasnt sure it that made sense. lol

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