What is genetics? what are its functions?

Answer 1

Genetics (from the Greek genno γεννώ= give birth) is the science of genes, heredity, and the variation of organisms. The word "genetics" was first suggested to describe the study of inheritance and the science of variation by the prominent British scientist William Bateson in a personal letter to Adam Sedgwick, dated April 18, 1905. Bateson first used the term "genetics" publicly at the Third International Conference on Genetics (London, England) in 1906.

Heredity and variations form the basis of genetics. Humans applied knowledge of genetics in prehistory with the domestication and breeding of plants and animals. In modern research, genetics provides important tools for the investigation of the function of a particular gene, e.g., analysis of genetic interactions. Within organisms, genetic information generally is carried in chromosomes, where it is represented in the chemical structure of particular DNA (deoxyribonucleic acid) molecules.

Genes encode the information necessary for synthesizing the amino-acid sequences in proteins, which in turn play a large role in determining the final phenotype, or physical appearance, of the organism. In diploid organisms, a dominant allele on one chromosome will mask the expression of a recessive gene on the other.

The phrase to code for is often used to mean a gene contains the instructions about how to build a particular protein, as in the gene codes for the protein. The "one gene, one protein" concept is now known to be simplistic. For example, a single gene may produce multiple products, depending on how its transcription is regulated. Genes code for the nucleotide sequences in mRNA, tRNA and rRNA, required for protein synthesis.

Genetics determines much (but not all) of the appearance of organisms, including humans, and possibly how they act. Environmental differences and random factors also play a part. Monozygotic ("identical") twins, a clone resulting from the early splitting of an embryo, have the same DNA, but different personalities and fingerprints. Genetically-identical plants grown in colder climates incorporate shorter and less-saturated fatty acids to avoid stiffness.

http://en.wikipedia.org/wiki/Genetics

Answer 2

Genetics (from the Greek genno γεννώ= give birth) is the science of genes, heredity, and the variation of organisms.

Functions:

Genes encode the information necessary for synthesizing the amino-acid sequences in proteins, which in turn play a large role in determining the final phenotype, or physical appearance, of the organism. In diploid organisms, a dominant allele on one chromosome will mask the expression of a recessive gene on the other.

Genetics determines much (but not all) of the appearance of organisms, including humans, and possibly how they act. Environmental differences and random factors also play a part.

Answer 3

Genetics is a science- the science of inheritance. It has no functions, but certain things function according to it.

Answer 4

Genetics is like infrastructure of the organisms or the science dealing with the building blocks and inheritence of certain things like diseases and long life also so if your grandparents lived a long life an your parents also live than you will also live.
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Answer 5

Genetics is how you're built. Your blueprint is a double-helix of Deoxyribonucleic Acid (DNA) It is composed of four letters CTGA: Cytosine, Thyamine, Guanine, Adenosine.

That's the function of genetics: kept you from coming out a chimp or an orangatan.

Answer 6

Genetics makes up us.It comes from our parents.

Answer 7

You won't learn anything if you keep trying to get other people to do your homework for you. Read the text.

Answer 8

sounds like homework!! Read the textbook or start googling answers.