b1 revision
- Created by: Lydia's science
- Created on: 20-10-15 12:33
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- B1 Revision
- Genetic Information
- These are coded inside the nucleus.
- all organisms develop following a set of instructions.
- The instructions control how the organism develops.
- The instructions are called GENES
- Genes occur in very long DNA
- Chromosome are made of DNA molecules.
- The DNA molecules consists of two strands, forming a DOUBLE HELIX
- Eye colour and variation
- There is a number of genes coding the different pigments of the iris
- This means enormous variation in eye colour
- The differences between individuals of the same species and described as variations
- Genes- the different characteristics that an individual inherits
- environmental; how the environment changes an individual
- Genotype is the term describing the genetic make up of an organism.
- Phenotype describes the observable characteristics the organism has
- Sex Cells
- 23 + 23 = 46
- Huntington's Disease
- Cystic Fibrosis
- Genetic Information
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