Independent Assortment

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Independent Assortment
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Crossing Over
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Anaphase 1
Metaphase 2
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Anaphase 2
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Independent Assortment with Crossing Over
Blue, blond, straight
Brown, brown, curly
Blue, blond, curly
Brown, brown, straight
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Mendels Experiments
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True breeding parents P generation
P
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P
F1
All purple
F1 1st filial generation
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P
F1
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True breeding parents
P
X
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F1
Pp
All purple, all heterozygous
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P
X
PP
pp
X
F1
Pp
Pp
X
X
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Punnett Square used to predict what type of
offspring two parents could produce.
PP
Pp
pp
Pp
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Eye Color
Mom blue eyes, bb
Dad brown eyes, Bb
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Single Gene, Single Trait
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Single Gene, Single Trait Autosomal, Incomplete
Dominance
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Single Gene, Single Trait Autosomal, Codominance
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Blood Type
Mom Type A, Ao
Dad Type O, oo
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Sex-linked Inheritance
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Sex-linked Inheritance
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Single Gene, Single Trait

• Autosomal, Complete dominance
• Autosomal, Incomplete dominance
• Autosomal, Codominance
• Sex-linked, Complete dominance (usually)

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Multiple Genes, Single Trait
Polygenic Inheritance
3 Genes, 2 alleles each, incomplete dominance A
A, a B B, b C C, c
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Chromosomal Inheritance
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Meiotic Errors
Meiosis I
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Meiotic Errors
Meiosis II
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