short notes on "HEREDITY " by Nagraj Sir
short notes on "HEREDITY" by Nagraj Sir Introduction Heredity is the passing of traits from parents/ancestors to offspring. Heredity occurs through inheritance of genes. Biological inheritance is what is related to heredity. Study of heredity is termed as Genetics. Inheritance from a previous generation provides a common basic body design and few changes in it for the next generation. A trait that is genetically passed down from one generation to another is termed as ‘Inherited trait’. Some of the common examples of inherited traits are hair colour (Black, brown, red etc.), eye colour(Black, brown, blue), height (tall, short), Ear lobes (free, attached) Variation : It means the differences in the characters or traits among the individuals of a species. Variations occur during reproduction both because of error in DNA copying and as a result of sexual reproduction. Variations contribute to evolution. Causes of variations: 1. ...