A group of similar cells that perform a single function is called a tissue.
Answer:
she should look for a tall dominant gene in a man or TT while she would be a tt.
Explanation:
<span>This organelle is the nucleolus.
The nucleolus is made of proteins, DNA, and RNA. They form around specific regions of the chromosomes called nucleolar organizing regions. These regions of the chromosomes contain some the genes needed for ribosome production.</span>