Final Review: 2nd Semester Biology Answer Key

Final Review: 2nd Semester Biology Answer Key. DNA is the hereditary material in cells. It is a chain of nucleotides. A gene is a piece of DNA that controls one trait. Or it is a piece of DNA that is the information to construct one protein/polypeptide. ... Example: If a mother is heterozygous for free ear lobes (a dominant trait) her eggs can ... ................
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