Updated By: LatestGKGS Desk
Genetics:Mendel’s Laws of Inheritance-segregation, independent assortment & dominance
Gregor John Mendel and Genetics-
Mendelian Genetics is a kind of biological inheritance that highlights the laws proposed by Gregor Mendel in 1866 and rediscovered in 1900.
on the basis of hybridization experiment on Pisum sativum, Mendel proposed the Principles of inheritance known as Mendel’s Laws.
Law of Segregation ( law of purity of gametes)
According to the law of segregation, every parent’s pair of genes or alleles divide and a single gene passes from every parent to an offspring. Which particular gene passes on in a pair is entirely up to chance.
Law of Independent Assortment
According to the law of Independent Assortment, discrete pairs of alleles passes onto the offspring without depending on one another. Hence, the inheritance of genes at a particular region in a genome does not affect the inheritance of genes in a different region.
Law of Dominance
According to the law of dominance, recessive alleles are always masked by dominant alleles. Hence, a cross among a homozygous recessive and a homozygous dominant shows the dominant phenotype by still having a heterozygous genotype. This law could be explained by the monohybrid cross experiment. In case of a cross among the two organisms of contrasting traits, the character that is visible in the F1 generation is known as dominant and the one that is suppressed is known as recessive.
