When Mendel worked with pea plants, he took the parent plants to be with pure homozygous chromosomes, but it can be that they were not homozygous. How was he sure whether it is homozygous (it could have been heterozygous too)??

When Mendel worked with pea plants, he took the parent plants to be wi

1.	When Mendel worked with pea plants, he took the parent plants to be with pure homozygous chromosomes, but it can be that they were not homozygous. How was he sure whether it is homozygous (it could have been heterozygous too)??
Answer» When Mendel worked with pea plants, he took the parent plants to be with pure homozygous chromosomes, but it can be that they were not homozygous. How was he sure whether it is homozygous (it could have been heterozygous too)??