Which best describes the pure lines in mendel's experiment

A. They were the F2 generation

B. They were heterozygous

C. They were homozygous

D. They could not reproduce

Pure lines were homozygous. They had the same pair of an allele, either both of a dominant one or both for recessive phenotype. For example, a pure line will have either AA or aa, and ant not heterozygous Aa. Pure lines the clone of the homozygous parents.