Question

hunting disease is an inherited condition that lead to brain deterioration at the age of 35. the allele for hunting disease (h) is dominant to the unaffected allele (h).

if a person who is heterozygous has children with a person who is homozygous recessive, what percentage of their children will likely have hunting disease?

25%
50%
100%
0%

Explanation:

Step1: Determine the genotypes of the parents

The heterozygous parent has the genotype \(Hh\), and the homozygous recessive parent has the genotype \(hh\).

Step2: Set up the Punnett square

	\(H\)	\(h\)
\(h\)	\(Hh\)	\(hh\)

Step3: Analyze the offspring genotypes

Out of the 4 possible offspring genotypes (\(Hh, hh, Hh, hh\)), 2 are \(Hh\) (affected) and 2 are \(hh\) (unaffected).

Step4: Calculate the percentage

The percentage of affected children is \(\frac{2}{4}\times100\% = 50\%\)

Answer:

50%