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Heredity Notes

help for quiz last marking period

Who was Gregor Mendel? An Austrian monk who experimented on heredity in plants in the mid-1800's. Discovered a break through conclusion in heredity science.
What is a phenotype? traits in the DNA that can be seen or expressed.
What is a Genotype? ALL traits in the DNA includes the phenotype.
What is the Dominant Allele (X)? expressed in the phenotype, even if only one copy is present in the chromosome. Ex: brown eyes.
What is the Recessive Allele (x)? expressed in the phenotype, if only the two copies are present in the chromosome. Ex: blue eyes.
What is a Punnett Square? this shows the outcome for all inherited traits. each box shows a different allele (trait). The Dominant is shown as a capital letter, the recessive shown as a lower case letter.