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11-1 The Work of Gregor Mendel p308
Q: Where does an organism get its unique characteristics? Genetics- the scientific study of heredity
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Gregor Mendel’s Peas Fertilization- produces new cells with male & female 2 types self-pollination (same plant) cross-pollination (2 different plants)
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Trait-a specific characteristic
EX: eyes Hybrids-offspring of parents with different traits EX: blue eyes Dad & brown eyes Mom
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A: An individual’s characteristics are determined by factors that are passed from one parental generation to the next. Genes- the factors that are passed from parent to offspring. Ex: plant height Alleles- the different forms of a gene Ex: Tall plants & short plants Key: An individual’s characteristics are determined by factors that are passed from one parental generation to the next.
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Principle of Dominance
Dominance-always exhibit that form of the trait. Aa or AA Recessive-exhibit that form of the trait only when the dominant is not present. aa
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How are the different forms of a gene distributed to offspring?
P=parents F1=first generation F2=second generation
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Q: How are different forms of a gene distributed to offspring
Q: How are different forms of a gene distributed to offspring? A: During gamete formation, the alleles for each gene segregate from each other, so that each gamete carries only one allele for each gene.
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Explaining: each F1 plant produces two types of gametes
Gametes- Sex cells Segregation- separation of alleles
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WB pgs Complete #1-5, 9, the table, 10, 11,12,13(the circles).
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