Mendelian genetics provides the basis for understanding the transmission of traits from parental organisms to their offspring. Though modified by our current understanding of the chromosomal theory of inheritance and molecular biology, Mendel's laws form the theoretical basis of our understanding of the genetics of inheritance. The law of segregation holds that during gamete formation, the alleles for each gene segregate from each other so that each gamete carries only one allele for each gene. The law of independent assortment holds that genes for different traits can segregate independently during the formation of gametes. The law of dominance holds that some alleles are dominant while others are recessive; an organism with at least one dominant allele will display the effect of the dominant allele.
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