Heredity

Do you remember our grandparents telling that we are accurately like our father or mother?

Yes, it is the concept of heredity, the most puzzling and mysterious phenomena of nature. No matter how unique we call ourselves, we happen to be an accumulation of all the traits we have inherited. Therefore, bloodline matters and those traits will travel through you, to the end of time.

Heredity is normally defined as the method by which an offspring acquires predisposed to the characteristics of its parent cell. It is the process of transferring genetic traits from parents to their offspring and is initiated by the recombination and segregation of genes during cell division and fertilization.

The process of heredity is the sum of all biological processes resulting in the genesis of a new organism similar to its kind and displaying certain modifications rising from the genes and their interactions with their surroundings.

Inheritance

 

Inheritance

Inheritance works differently where sexual and asexual reproduction is concerned. Here we can see this inheritance from the past generation that provides both essential body requirements with complex changes in it for their next generation.So when this new generation, in turn, reproduces the next generation which may have differences that they received from their past generation, along with a newly created difference in asexual reproduction.

For example- when one individual bacterium divides producing two bacteria which again divides producing four individual bacteria. The newly generated individuals would be very much similar to each other and there would be only the minor differences between them caused due to small errors in DNA copying. This is the case with asexual reproduction.

In the case of sexual reproduction, there would be greater difference produced. Not all these changes in a species have similar possibilities of surviving in the environment. Their possibilities mainly depend on the nature of variations or evolution. Different individuals have different kinds of advantages.

For example -the Drosophila which has strong resistance to heat will persist better even in a heat wave. So here the selection of variants by environmental factors determines the source for the evolutionary process. Although, the several obvious consequences of the reproductive process still remains with the generation of individuals. The similar pattern and the rules of heredity determine the process by which traits and characteristics are reliably inherited.

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Practise This Question

A sugarcane field consist of little variations when compared to butterfly population. The reason could be