Define heredity. explain the mechanism of hereditary changes
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heredity is known as phenomenon of inheritance of character from parents to their offspring... mechanism of heredity changes as Inheritance involves the transfer of characters from one generation to another generation.Basic features of inheritance are elucidated.✴️The traits could be hidden in many generations but can reappear in any generation unchanged. ✴️Traits which remain together may get separated in the next generation. ✴️One form of a particular character is exhibited frequently than the other form of the same character.
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Heredity is defined as the characteristics we get genetically from our parents and our relatives before them. An example of heredity is the likelihood that you will have blue eyes.
Mechanism of Heredity:
1. Mating:
Mating is the first step for reproduction. It is essential for the union of the male germ cell spermatozoa with the female ovum. The union causes fertilisation of the ovum. Growth and development takes place
2. Growth:
Growth involves repeated division of the fertilised cell or zygote.
3. Chromosomes:
In a fertilised ovum, there are 24 pairs of chromosomes, 24 from father and 24 from mother.
4. Genes:
the genes are the real carriers and determinants of heredity. Each gene carries some structure which is responsible for the development of a particular trait.
Mechanism of Heredity:
1. Mating:
Mating is the first step for reproduction. It is essential for the union of the male germ cell spermatozoa with the female ovum. The union causes fertilisation of the ovum. Growth and development takes place
2. Growth:
Growth involves repeated division of the fertilised cell or zygote.
3. Chromosomes:
In a fertilised ovum, there are 24 pairs of chromosomes, 24 from father and 24 from mother.
4. Genes:
the genes are the real carriers and determinants of heredity. Each gene carries some structure which is responsible for the development of a particular trait.
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