genetics and health
dna
stands for deuxyribonuclic acid
double helix
give you your characteristics
chromosones
made up of protein and dna
there are 46 in each cell
variation
continuous and discontinuous variatio
continuous is characteristics that change over a range of values e.g. height
discontinuous characteristics with limited number of ptions
inherited diseases
DNA is the genetic code which makes up genes, which are responsible for giving an organism a specific characteristic.
Watson and Crick, with help from Franklin and Wilkins, discovered the double helix structure of DNA in 1953.
variation
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The differences in characteristics between individuals of the same species is called variation.
Some variation is passed on from parents to offspring, via genes during reproduction. This is inherited variation.
Some variation is the result of differences in the surroundings, or what an individual does. This is called environmental variation.
a disease you gain from your parents
e.g. cancer alzcheimers parkinsons
cystic fibrosis sickle cell anemia huntingtons disease
Heredity is the study of inheritance.
Genetic conditions are inherited from parents.