genes for dimples. alleles for dimples. chromosomes for dimples. genotypes for dimples.
I gave my students this multiple choice question: A girl inherited the dominant trait of dimples but her sister did not because both parents had different

Only one answer is correct among these 4 choices:
- genes for dimples.
- alleles for dimples.
- chromosomes for dimples.
- genotypes for dimples.

Could you tell me which one is correct?

alleles for dimples.