* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Mendel and Punnett Square notes
Population genetics wikipedia , lookup
Neuronal ceroid lipofuscinosis wikipedia , lookup
Epigenetics of neurodegenerative diseases wikipedia , lookup
Essential gene wikipedia , lookup
Pharmacogenomics wikipedia , lookup
Human genetic variation wikipedia , lookup
Epigenetics of diabetes Type 2 wikipedia , lookup
Gene therapy of the human retina wikipedia , lookup
Pathogenomics wikipedia , lookup
Vectors in gene therapy wikipedia , lookup
Genetically modified crops wikipedia , lookup
Gene therapy wikipedia , lookup
Therapeutic gene modulation wikipedia , lookup
Minimal genome wikipedia , lookup
Ridge (biology) wikipedia , lookup
Gene desert wikipedia , lookup
Heritability of IQ wikipedia , lookup
Gene nomenclature wikipedia , lookup
Genomic imprinting wikipedia , lookup
Genetic engineering wikipedia , lookup
Site-specific recombinase technology wikipedia , lookup
Public health genomics wikipedia , lookup
Epigenetics of human development wikipedia , lookup
Genome evolution wikipedia , lookup
Nutriepigenomics wikipedia , lookup
Dominance (genetics) wikipedia , lookup
History of genetic engineering wikipedia , lookup
Gene expression programming wikipedia , lookup
Biology and consumer behaviour wikipedia , lookup
Artificial gene synthesis wikipedia , lookup
Gene expression profiling wikipedia , lookup
Genome (book) wikipedia , lookup
Quantitative trait locus wikipedia , lookup
Mendel and Punnett Square notes ( text pages: 226-232) - Genes come in pairs, one from each parent. 2 genes for eyebrow shape, blood type, etc. These genes could be the same or different 1. Dominant gene: - carries the dominant trait - represented by uppercase letter - because this gene is dominant, you only need one gene for the trait to show. Example: TT: 2 genes for tall Homozygous: Same genetic trait Tt: 1 gene for tall 1 gene for short. ( tall is dominant, short is recessive) Heterozygous: 2 different genetic traits 2. Recessive gene - carries the recessive trait - represented by lower case letter - 2 recessive genes are needed for the recessive trait to show Example: tt: 2 recessive genes for short, plant is short. Punnett Squares are used to predict the possible offspring for a cross between 2 parents. Example: tall pea plant ( TT) x short pea plant ( tt): T T Tt Tt Tt Tt Genotype: The genetic combination one from each parent. For the example all are Tt . Phenotype: what the offspring LOOKS like! The dominant gene always wins! The example above all LOOK TALL. Mendel took the offspring from the 1st cross and bred them: Tt xTt Results: T T t t TT Tt Tt tt Ratio is 4:1 only 1 chance that the offspring will show the recessive trait. 3 of the 4 will show the dominant trait.