what is the difference between gene,genome and DNA
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Genes contain DNA (deoxyribonucleic acid). DNA is the chemical basis of heredity. Think of it this way: DNA is ingenes, genes are on chromosomes. When "mapping" all genes on all human chromosomes was first seriously conceived, it was called the Human Genome Project - a combination of gene and chromosome.
Genome is broader term and it includes all the genes within a an individual’s chromosome whereas, genes are the sequence of nucleic acids capable of expressing and exerting phenotypes or metabolic changes. They constitutes the unit of genome..
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Genome is broader term and it includes all the genes within a an individual’s chromosome whereas, genes are the sequence of nucleic acids capable of expressing and exerting phenotypes or metabolic changes. They constitutes the unit of genome..
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DNA stands for Desoxyribo Nucleic Acid. They are molecules that are the building units of the genetic material that is present in every living organism from bacteria to plants and to humans. These DNA molecules can combine with each other to form very long chains.
In these very long chains (chromosomes) of DNA, one can define many smaller areas, still made up of a couple of thousands of DNA units. These areas are called genes, and they encode individually for the genetic characteristics of the living organism. For example, a gene in a plant may cause that plant to be resistant against a disease. Or another gene in a fruit fly may cause that fruit fly to have short wings. These are all naturally occurring traits. Sometimes several or many different genes together make up for a specific trait. For example the blue, gray, green or brown coloration in our eyes.
A genome is the name for all genetic material that is characteristically present in one organism. So all the different chromosomes of an organism together make up that organism's genome. A genome therefore contains all the characteristics together that make a frog a frog and that make a banana plant a banana plant. The genome (all the chromosomes together) is present in every individual cell of any living organism. Some organisms consist of only one cell (bacteria), but others are larger, like fungi. Other organisms like plants, dogs or humans are built up of billions of cells. But in one living organism, all cells contain the same genetic material.
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In these very long chains (chromosomes) of DNA, one can define many smaller areas, still made up of a couple of thousands of DNA units. These areas are called genes, and they encode individually for the genetic characteristics of the living organism. For example, a gene in a plant may cause that plant to be resistant against a disease. Or another gene in a fruit fly may cause that fruit fly to have short wings. These are all naturally occurring traits. Sometimes several or many different genes together make up for a specific trait. For example the blue, gray, green or brown coloration in our eyes.
A genome is the name for all genetic material that is characteristically present in one organism. So all the different chromosomes of an organism together make up that organism's genome. A genome therefore contains all the characteristics together that make a frog a frog and that make a banana plant a banana plant. The genome (all the chromosomes together) is present in every individual cell of any living organism. Some organisms consist of only one cell (bacteria), but others are larger, like fungi. Other organisms like plants, dogs or humans are built up of billions of cells. But in one living organism, all cells contain the same genetic material.
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