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Published byByron Morris Modified over 9 years ago
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“Stronger” trait Will show as long as gene is present Represented by capital letter (B)
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“Weaker” trait Needs to have 2 to show up Represented by lowercase letter (b)
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What YOU look like Example: roller, non-roller, red hair, non-red hair
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What the genes look like (letters of genes) Example: Rr, RR, rr
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2 of the same alleles (genes) Example: RR, rr
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1 of the same alleles (genes) Example: Rr
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13 Homozygous Dominant = TT
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(Homozygous) Recessive = tt Heterozygous= Tt
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Likelihood that an event will happen Used to predict in genetics
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ALBINO ANIMALS!
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Animals with no pigment Lack of color in eyes allows to see through to blood vessel = red eyes
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Some “normal” animals carry the albinism gene (a) Must have 2 recessive genes for albinism (aa)
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Now it’s time for PUNNET SQUARES!
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Chart used to show possible gene combinations
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Glue in the small piece of paper you were given in the remaining space!
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Normal Squirrel Albino Squirrel Phenotype: Normal Genotype: AA or Aa Phenotype: Albino Genotype: aa x
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AA a a AaAa AAaa Chances: 100% not albino 0 % albino
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Aa a a Aaaa Aaaa Chances: 50% not albino 50 % albino
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Aa A a AAAa Aaaa Chances: 75% not albino 25% albino
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Heterozygous Tongue Roller Phenotype: Roller Genotype: Tt Heterozygous Tongue Roller Phenotype: Roller Genotype: Tt
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Homozygous Tongue Roller Phenotype: Roller Genotype: TT Homozygous Tongue Roller Phenotype: Roller Genotype: TT
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