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Heredity PowerPoint PPT Presentation


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Heredity. Vocabulary. Get the definitions for the following terms from your text: gene genotypegenomephenotypeallele homozygousheterozygousdominant recessive. Law of Segregation. Organisms inherit two copies of each gene, one from each parent

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Heredity

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Heredity l.jpg

Heredity


Vocabulary l.jpg

Vocabulary

Get the definitions for the following terms from your text:

gene

genotypegenomephenotypeallele

homozygousheterozygousdominant recessive


Law of segregation l.jpg

Law of Segregation

  • Organisms inherit two copies of each gene, one from each parent

  • Organisms donate only one copy of each gene in their gametes

  • Two copies of each gene segregate, or separate, during gamete formation


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Segregation and Inheritance


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Traits Studied by Mendel


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Flower Color

In pea plants:

The allele for violet flower color

(B) is dominant

The allele for white flower color

(b) is recessive


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Genotype vs. Phenotype


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A Punnett Square


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CF - AnAutosomal RecessiveTrait


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Punnett Square

Carrier mother

G

g

G

GG

Gg

Carrier

father

50%

25%

g

Gg

gg

50%

25%

Child with CF


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Autosomal Recessive:A Pedigree


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Inheritance of an AutosomalDominant Trait


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Incomplete Dominance


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