Intro to Genetics
Presentation
•
Science
•
7th Grade
•
Practice Problem
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Easy
Standards-aligned
KAILYN RIX
Used 86+ times
FREE Resource
9 Slides • 4 Questions
1
Intro to Genetics
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Inheriting Traits
Heredity - the passing of traits from parents to offspring
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Multiple Choice
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Traits
Genotype: Genetic makeup of a trait
BB
Phenotype: Physical appearance of a trait
Blue Body
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Multiple Choice
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Traits
Homozygous: same copies of alleles in an organism
Ex. TT = purebred
Heterozygous: different copies of alleles
Ex. Tt = hybrid
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Multiple Choice
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Alleles
Dominant: allele that dominants expression of gene
Noted by capital letters
Example: Tall = T
Recessive: Allele hidden/masked by other allele, only shows when homozygous
Noted by lower case letters
Example Short = t
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Multiple Choice
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Mendal's Experiment
Crossbred a purebred dominant plant with the opposite purebred recessive plant (PPxpp)
This resulted in a hybrid (F1) generation
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Mendel's Experiment Continued
Crossbred the resulting hybrid (F1) generation plants
The offspring (F2) generation resulted in three dominant and 1 recessive plant
75% dominant and 25% recessive
PP, Pp, Pp, pp
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Intro to Genetics
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