If two parents have an autosomal recessive trait, what can we say about the transmission of the trait to their children?

1 Answer
Jane
Mar 14, 2018

For these type of problem just do analysis of pedigree,by considering the genotypes.

If the both the parent were having autosomal recessive trait that means their genotype would have been #Aa# where,#A# stands for chromosome carrying normal dominant gene and #a# for the chromosome carrying recessive gene for the disease.

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So,out of the #4# children #3# get the recessive gene but only #1# is the sufferer,

So,probability of suffering from this disease is #1/4#

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