Genetics is the study of heredity and variations from "summary" of NCERT Exemplar Problems-Solutions BIOLOGY class 12th by Arihant Experts
Genetics is a field of biology that deals with the study of heredity and variations. It involves the study of genes, genetic variation, and the mechanisms through which traits are passed down from one generation to the next. Through the study of genetics, scientists aim to understand how traits are inherited, how they are expressed, and how they can change over time. Heredity refers to the passing on of traits from parents to offspring. This process is governed by genes, which are units of inheritance that are passed down from one generation to the next. Genes are located on chromosomes, which are long strands of DNA that contain the genetic information necessary for the development and functioning of an organism. Variations, on the other hand, refer to differences in traits among individuals of the same species. These variations can be caused by genetic factors, environmental factors, or a combination of both. By studying variations, scientists can gain insights into how traits are inherited and how they can change over time. Genetics is a complex field that involves the study of a wide range of topics, including DNA replication, gene expression, genetic mutations, and genetic disorders. It also encompasses the study of genetic diversity within and among populations, as well as the evolutionary implications of genetic variation.- Genetics plays a crucial role in our understanding of how traits are inherited and how they can change over time. By studying heredity and variations, scientists can gain valuable insights into the genetic basis of traits, the mechanisms through which they are inherited, and the factors that contribute to their variation.
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