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State Mendel's-

1) Law of Segregation

2) Law of Dominance

3) Law of Independent Assortment

Thx.

Mendel performed experiments on a garden pea (Pisum sativum) with different visible contrasting characters. Based on these experiments, Mendel devised certain principles or laws of inheritance.

Law of Dominance

1. 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.

2. This law explains expression of only one of the parental character in F1 generation and expression of both in F2 generation.

Law of Segregation

1. This law states that the two alleles of a pair segregate or separate during gamete formation such that a gamete receives only one of the two factors.

2. 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

1. When two pairs of traits are combined in a hybrid, one pair of character segregates independent of the other pair of character.

2. 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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mendel's law of dominance states that " when two organnisms are crossed for a pair  of contrasting characters, only one character appears in the first fillial generation.but the another character also known as the remains hidden.

the law of segregation of law of purity of gametes states that, when a pair of contrasting character is brought in the hybrid union, the gametes stay together without mixing and also separate during gamete formation.

 

when we consider two or more contrasting character, the pattern  of inheritace remains same. this means that each pair of unit character is independent of the other.

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Mendel's first law (also called the law of segregation) states that during the formation of reproductive cells (gametes), pairs of hereditary factors (genes) for a specific trait separate so that offspring receive one factor from each parent.  Mendel's second law (also called the law of independent assortment) states that chance determines which factor for a particular trait is inherited.  Mendel's third law (also called the law of dominance) states that one of the factors for a pair of inherited traits will be dominant and the other recessive, unless both factors are recessive.


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aw 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 F1 generation and expression of both in F2 generation.

 

 

 

Law of Segregation

 

  • This law states that the two alleles of a pair segregate or separate during gamete formation such 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 proportion
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