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an allele with same effect on phenotype whether it is present in homo or heterozygous state
an allele that only has an effect on the phenotype when present in homozygous state
an individual that has one copy of recessive allele that causes a genetic disease in individuals that are homozygous for this allele
combinations of genes tend to be inherited together because of their loci being close together on the same chromosome
the reassortment of genes or characteristics into different combinations from those of the parents
crossing over allows recombination of linked genes; all of the genes that have their loci on the same chromosome form a linkage group
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