Question

which is dominant yellow or green in plants​

Answer 1

Answer:

Seed color is governed by a single gene with two alleles. The yellow-seed allele is dominant and the green-seed allele is recessive.

Answer 2

Answer:

Plants with two different alleles of a gene are heterozygous. Since all the heterozygous offspring are yellow, then the yellow allele must be dominant over the recessive green allele.