Question

using this pedigree, what will the genotype for #d 3 be?
ww
ww
ww
ww
not enough information is given to tell the genotype.
babies were born during a power outage at the hospital. during the

Explanation:

Step1: Identify parental genotypes

Parent B-4: affected (shaded), so must have dominant allele. Parent B-5: unaffected (unshaded), genotype $ww$ (recessive homozygous, since the trait is dominant: shaded individuals show the dominant phenotype, unshaded are recessive).

Step2: Determine inheritance for D-3

D-3 is shaded (affected, dominant phenotype). Since parent B-5 can only pass a $w$ allele, D-3 must inherit $w$ from B-5, and a dominant $W$ from B-4.

Answer:

Ww