a plant heterozygous for yellow seeds is crossed with a plant homozygous for green seeds. use the punnett…

Explanation:

Step1: Identify parent genotypes

The heterozygous yellow - seeded plant has genotype Yy and the homozygous green - seeded plant has genotype yy.

Step2: Fill the Punnett square

For the top - left box (1), we get the combination from the sperm with allele Y and the egg with allele y, so the genotype is Yy. For the top - right box (2), we get the combination from the sperm with allele y and the egg with allele y, so the genotype is yy. For the bottom - left box (3), we get the combination from the sperm with allele Y and the egg with allele y, so the genotype is Yy. For the bottom - right box (4), we get the combination from the sperm with allele y and the egg with allele y, so the genotype is yy.

Answer:

1. Yy
2. yy
3. Yy
4. yy