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Transcript
Genetics Mr. Fox Science Class Basic Terms • Traits – Physical characteristics • Heredity – the passing of traits from parent to offspring • Genes – factors that control traits Gregor Mendel The Godfather of Genetics Austrian monk and teacher 1851 – worked with pea plants to study the effects of crossing plants with certain traits with others. Came up with a couple of rules, and ideas of how heredity works. Dominant and Recessive • Alleles – different forms of a gene – Individual alleles control the inheritance of traits. • Dominant Allele – Always shows up when the organism has this allele. Represented by a capital letter. • Recessive Allele – the allele that gets covered up if the dominant allele is present in an organism. What does it all mean??? • Everyone has two alleles. One from mom and one from dad. • Purebred – is if both alleles are exactly the same. • Hybrid – is if the alleles are different.
