Genes, Chromosomes and DNA
- Created by: Georgina C
- Created on: 31-05-14 11:58
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- Genes, Chromosomes and DNA
- NUCLEUS: most cells in body have one
- Contains genetic material
- In form of CHROMOSOMES
- Human cell nucleus contains 23 pairs of chromosomes.
- Two no.1s, two no.2s, two no.3s, etc.
- Contains genetic material
- Chromosomes carry GENES
- Different genes control the development of different characteristics
- e.g. hair colour
- A gene is a short length of a chromosome...
- ...which is quite a long length of DNA.
- Different genes control the development of different characteristics
- DNA is coiled up to form the arms of chromosome.
- ...which is quite a long length of DNA.
- There can be different versions of the same gene, which give different versions of a characteristic, like blue or brown eyes.
- The different versions of the same gene are called alleles instead of genes.
- NUCLEUS: most cells in body have one
- A gene is a short length of a chromosome...
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