Which of the following is a phenotype?
aa
heterozygous genes
black hair
mutated dna

Black hair.

Explanation:

Phenotypes are genes that are physically expressed. Out of all of these answer choices, which one is something that you can actually see on someone's body? That's right! Therefore, the answer is "black hair."

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a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

explanation:

c should be the answer