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1 Chromosomal mutations A mutation is a change in the DNA Generally, mutations are considered at the gene level, but some types of mutations involve addition,
Chris Willocks 20071 Year 10 Science Health and disease Genetic disease: Down’s syndrome.
Chromosome disorders
1 Polygenic Traits Traits that Mendel studied were discrete –Discontinuous variation: “are or aren’t” Other traits are continuous –Examples: height, weight,
Chromosome disorders. Chromosome disorders are the result of missing or extra chromosomes.
Texan Digital • March 19, 2014 • Issue #26
