Question

question 3
use this punnett square as a tool to work out patterns of autosomal recessive inheritance.
drag and drop an icon from the right for both parents, based on whether they are affected, unaffected, or carriers of a trait or disease.
go to https://dnalc.cshl.edu/view/17001-punnett-square-blank.html
click change letters button at the bottom of the tool - and change to gg
drag and drop the carrier genotype to dad, and the carrier genotype to mom position.
click the \mate\ button, and you will see that the genotype of all offspring.
if g = green hair and g = yellow hair, how many offspring out of four are expected to have the same hair color as the parents?
a 4
b 2
c 1
d 3

Explanation:

Step1: Determine parents' genotypes

Parents are carriers with genotype \(Gg\).

Step2: Create Punnett square

	\(G\)	\(g\)
\(g\)	\(Gg\)	\(gg\)

Step3: Analyze phenotypes

\(GG\) and \(Gg\) have green hair (same as parents), \(gg\) has yellow hair.
Number of green - haired offspring: \(3\) (\(GG, Gg, Gg\))

Answer:

d 3