Genetics Notes

Gregor Mendel Father of genetics Pea pod experiments

Traits and Inheritance Traits: Specific characteristics of an individual that can vary P: parent generation F 1 : filius/filia Hybrids: offspring that results from genetic combination of both parents Alleles: different forms of a gene Some are dominant forms, some are recessive forms

Punnett Squares Deal with probabilities Show possible genetic combinations that offspring can inherit Homozygous: organisms that have two identical alleles for a trait (can be dominant or recessive) Heterozygous: organisms that have two different alleles for a trait

Punnett Squares Phenotype Physical characteristics The physical expression of an organisms DNA Genotype Genetic makeup Represented by two of the same letters in Punnett Squares

Monohybrid Crosses Possible outcomes:

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