What is the genotype of pure-bred wrinkled green pea seeds?

The genotype of pure-bred wrinkled green pea seeds is rryy.

In pea plants, two traits are considered in this case:

Seed shape:

• Round is dominant (R)
• Wrinkled is recessive (r)

Seed color:

• Yellow is dominant (Y)
• Green is recessive (y)

For a pea plant to show both wrinkled and green traits, it must have two copies of the recessive alleles for each trait. That means:

• rr = wrinkled shape
• yy = green color

So, the genotype of a pure-bred (homozygous) wrinkled green pea seed is rryy.