Answer:
A. 0%
Explanation:
None of the offspring are predicted to be YY (homozygous dominant)
Mutation is a source of genetic variation
Answer: C. Scientific observations show that microscopic organisms living in the deep ocean are not made up of cells
Explanation: The cellular theory says that cells are the structural and functional basic unit of life, that all living organisms are made up of cells and that cells came from other cells. This theory should be modified if there's scientific observations that challenge the postulates: living organisms that were not made up of cells can't have cells as functional and structural units, for example.
Amino acids make up proteins. ansd DNA is transcripted to make RNA which is transported to ribosomes out of the nucleus which then reads the codons to choose amino acids that combine to form a polypeptide chain. the polypeptide chain that's long enough will make a protein which gives you your traits