Genes, Chromosomes & DNA
- Created by: laurenpulley31158
- Created on: 13-07-15 15:13
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- Genes, Chromosomes & DNA
- Most cells in your body have a nucleus
- It's the nucleus that contains your genetic material
- The genetic material in the nucleus is arranged into chromosomes
- The human cell nucleus contains 23 pairs of chromosomes
- Each chromosome is one very long molecule of DNA
- A gene is a short length of a chromosome
- Genes control the development of different characteristics
- E.g. Hair colour and how an organism functions
- Genes can exist in different versions
- Each version gives a different form of characteristic
- Like blue or brown eyes
- Different versions of the same gene are called alleles
- Each version gives a different form of characteristic
- Most cells in your body have a nucleus
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