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major source of genetic variation among organisms caused by reassortment or crossing over during meiosis
diploid cell formed when a sperm fertilizes an egg
paired chromosomes with genes for the same traits arranged in the same order
observed trait of an organism that masks the recessive form of a trait
outward appearance of an organism, regardless of its genes
haploid male sex cells produced by meiosis
when there are two different alleles for a trait
exchange of genetic material between nonsister chromatids from homologous chromosomes during prophase I of meiosis; results in new allele combinations
pattern of reproduction that involves the production and subsequent fusion of haploid sex cells