Genetics and Seed Shape in Pea Plants

What are the two possible alleles for seed shape in pea plants?

• Capital R and lowercase r

• Capital A and lowercase a

• Capital T and lowercase t

• Capital S and lowercase s

What does it mean for a pea plant to be heterozygous for seed shape?

• It has two identical alleles

• It has two different alleles

• It has three alleles

• It has no alleles

In a cross between two heterozygous pea plants, what is the expected phenotypic ratio of round to wrinkled seeds?

• 3:1

• 1:1

• 2:1

• 4:1

What is the genotype of a pea plant that is homozygous for wrinkled seeds?

• Capital R, lowercase r

• Capital R, lowercase s

• Capital R, Capital R

• Lowercase r, lowercase r

In a cross between a homozygous wrinkled seed plant and a heterozygous plant, what is the expected phenotypic ratio of round to wrinkled seeds?

• 1:1

• 2:1

• 3:1

• 4:1