Matching Pairs Bio Matching 6Online version Bio Matching 6 by Lewis Morris 1 Genetic Drift 2 Gene 3 Gene Pool 4 Genetics 5 Genetic Code 6 Phenotype 7 Genome 8 Genetic Variation Variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce. The nucleotide triplets of DNA and RNA molecules that carry genetic information in living cells. A gene is a locus (or region) of DNA that encodes a functional RNA or protein product, and is the molecular unit of heredity. The haploid set of chromosomes in a gamete or microorganism, or in each cell of a multicellular organism. The study of heredity Variations of genomes between members of species, or between groups of species thriving in different parts of the world as a result of genetic mutation. The set of observable characteristics of an individual resulting from the interaction of its genotype with the environment. The stock of different genes in an interbreeding population.