law of segregation(redirected from Mendel first law)
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law of segregation
See Mendel's law.
1. Also called law of segregation. the principle stating that during the production of gametes the two copies of each hereditary factor segregate so that offspring acquire one factor from each parent.
2. Also called law of independent assortment. the principle stating that the laws of chance govern which particular characteristics of the parental pairs will occur in each individual offspring.
3. Also called law of dominance. the principle stating that one factor in a pair of traits dominates the other in inheritance unless both factors in the pair are recessive.
[1900–05; after German. J. Mendel]
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|Noun||1.||law of segregation - members of a pair of homologous chromosomes separate during the formation of gametes and are distributed to different gametes so that every gamete receives only one member of the pair|
Mendel's law - (genetics) one of two principles of heredity formulated by Gregor Mendel on the basis of his experiments with plants; the principles were limited and modified by subsequent genetic research