Download 3.1 - Genes

3.1 - Genes
I. Gene – a heritable factor that consists of a length on
DNA and influences a specific characteristic
A. Found at a particular locus on a
chromosome.
B. Alleles – versions of a gene (variation in one –
a few bases) that code for different expressions
of genes
C. Mutation – change in one or more bases in a
gene (create different alleles)
1. Base Substitution Mutation – one nucleotide
of DNA replaced by a different one (ex. T goes
where there should be an A)
a. Sickle-Cell Anemia -
i. Advantages of sickle cell disease - Malaria
II. Genome-entire genome sequence of an organism
A. Human Genome Project – determined
sequence of entire genome
1. Sanger technique –
https://www.youtube.com/watch?v=nudG0r9zL2M