punnet square

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

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punnet square

Post by sara333 » Sat Feb 06, 2010 10:54 pm

how do you make a punnet square for an autosomal disease Diabetes?
if one parent has diabetes and the other doesn't. what are the male and female gamets?
what are the parental genotypes, and phenotypes! i am sooo lost!

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Post by jwalin » Sun Feb 07, 2010 3:18 am

now it depends
the parent who has diabetes could have it due to several reasons except genetic
but taking him to have due to genetic factors his genes will be homologous recessive (dd) annd the other parent could be a carrier (could have a history of family memebers having the disease) (Dd) or just normal (DD). the second parent is perfectly normal

gamete from 1st are
d and d
while from second in first case are
D and d
and in the second case are
D and D
it isn't what you do that matters but it is how you do it

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