Table of Contents
- 1 What is responsible for heredity and variation?
- 2 What molecule is responsible for heredity?
- 3 What is the large molecule essential for heredity and variation?
- 4 What are the primary molecules of heredity?
- 5 Which are the components the DNA molecule?
- 6 What are the requirements of a molecule being the hereditary molecule?
What is responsible for heredity and variation?
Genes encode the information for making specific proteins, which are responsible for the specific traits of an individual. Each gene can have several variants, called alleles, which code for different variants of the trait in question. Genes reside in a cell’s chromosomes, each of which contains many genes.
What molecule is responsible for heredity?
DNA as the agent of heredity.
What are the molecules of heredity?
Deoxyribonucleic acid (DNA) is one of the most famous molecules in the world. The molecule is composed of deoxyribose sugar, four different nitrogenous bases (thymine, adenine, cytosine, and guanine), and phosphate groups.
What is the large molecule essential for heredity and variation?
Each of our DNA molecules contains the genetic codes, or genes, for the synthesis of many different kinds of proteins and for the regulation of other genes.
What are the primary molecules of heredity?
12 DNA: The Molecule of Heredity.
What molecule determines the characteristics a child will inherit from its parents?
A molecule called DNA (deoxyribonucleic acid) is passed from adult organisms to their offspring during reproduction. This molecule containsthe instructions for an organism to develop, grow, survive and reproduce.
Which are the components the DNA molecule?
In turn, each nucleotide is itself made up of three primary components: a nitrogen-containing region known as a nitrogenous base, a carbon-based sugar molecule called deoxyribose, and a phosphorus-containing region known as a phosphate group attached to the sugar molecule (Figure 1).
What are the requirements of a molecule being the hereditary molecule?
Properties of DNA that are vital to its being the hereditary molecule are: its ability to replicate; its informational content; and its relative stability while retaining the ability to change or mutate. Alien life forms might utilize RNA, just as some viruses do, as a hereditary molecule.
Is it DNA or protein that is the molecule of heredity?
A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins.