what are different laws of inheritance which are given by mendal with explanation ?
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Mendels Laws of Inheritance
Based on his experiments, Mendel proposed three laws or principles of inheritance-
Law of Dominance
Law of Segregation
Law of Independent Assortment
Law of dominance and law of segregation are based on monohybrid cross while law of independent assortment is based on dihybrid cross.
Law of Dominance
According to this law, characters are controlled by discrete units called factors, which occur in pairs with one member of the pair dominating over the other in a dissimilar pair.
This law explains expression of only one of the parental character in F1generation and expression of both in F2generation.
Law of Segregation
This law states that the two alleles of a pair segregate or separate during gamete formationin such a way that a gamete receives only one of the two factors.
In homozygous parents, all gametes produced are similar; while in heterozygous parents, two kinds of gametes are produced in equal proportions.
Law of independent Assortment
When two pairs of traits are combined in a hybrid, one pair of character segregates independent of the other pair of character.
In a dihybrid cross between two plants having round yellow (RRYY) and wrinkled green seeds (rryy), four types of gametes (RY, Ry, rY, ry) are produced. Each of these segregate independent of each other, each having a frequency of 25% of the total gametes produced.
Based on his experiments, Mendel proposed three laws or principles of inheritance-
Law of Dominance
Law of Segregation
Law of Independent Assortment
Law of dominance and law of segregation are based on monohybrid cross while law of independent assortment is based on dihybrid cross.
Law of Dominance
According to this law, characters are controlled by discrete units called factors, which occur in pairs with one member of the pair dominating over the other in a dissimilar pair.
This law explains expression of only one of the parental character in F1generation and expression of both in F2generation.
Law of Segregation
This law states that the two alleles of a pair segregate or separate during gamete formationin such a way that a gamete receives only one of the two factors.
In homozygous parents, all gametes produced are similar; while in heterozygous parents, two kinds of gametes are produced in equal proportions.
Law of independent Assortment
When two pairs of traits are combined in a hybrid, one pair of character segregates independent of the other pair of character.
In a dihybrid cross between two plants having round yellow (RRYY) and wrinkled green seeds (rryy), four types of gametes (RY, Ry, rY, ry) are produced. Each of these segregate independent of each other, each having a frequency of 25% of the total gametes produced.
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