Question

what does the genotype have to do with how an organism looks?

since the dominant allele is expressed over the recessive, heterozygotes (those with genotypes with two different alleles such as tt) express the dominant trait. what is expressed or how the organism ends up appearing is called its phenotype. for example, an individual with the tt genotype will have a tall phenotype (or appearance). the dominant trait (t=tall) suppresses the recessive trait (t=short)

legend
y = yellow pods
y = green pods
r = round seeds
r = wrinkled seeds

select the dominant alleles
☐ r
☐ r
☐ y
☐ y

Explanation:

In genetics, dominant alleles are represented by uppercase letters. From the legend: \( Y \) (yellow pods) and \( R \) (round seeds) are uppercase, so they are dominant. \( r \) (wrinkled seeds) and \( y \) (green pods) are lowercase, so they are recessive.

Answer:

R. round seeds, Y. yellow pods