Examlex
In addition to the genes,physical variations in human populations may be due to the __________.
Common Ancestor
The most recent individual from which all organisms in a group are directly descended.
Gene
A sequence of DNA or RNA that codes for a molecule that has a function, acting as the basic unit of heredity in living organisms.
DNA Sequence
The order of nucleotides in a segment of DNA, determining genetic information and characteristics of living organisms.
RNA
Ribonucleic acid, a nucleic acid present in all living cells that plays a critical role in coding, decoding, regulation, and expression of genes.
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