define with example law of dominance ,law of segregation.
Law of Dominance
Law of dominance is known as the first law of inheritance. Each character is controlled by distinct units called factors, which occur in pairs. If the pairs are heterozygous, one will always dominate the other.
Law of dominance explains that in a monohybrid cross between a pair of contrasting traits, only one parental character will be expressed in F1 generation and both are expressed in F2 generation in the ratio 3:1. The one which expressed in F1 generation is called dominant trait and the one which is suppressed is called recessive trait. In simple words, the law of dominance states that recessive traits are always dominated or masked by dominant trait.
Law of Segregation
Law of segregation is the second law of inheritance. Law of segregation states that the pair of alleles segregates from each other during meiosis (gamete formation) so that only one allele will be present in each gamete. In a monohybrid cross, both the alleles are expressed in the F2 generation without any blending. Thus, the law of segregation is based on the fact that each gamete contains only one allele.