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Meiosis Standard 3.2.1: Explain the role of meiosis in sexual reproduction and genetic variation. Think about it: How does the process of meiosis differ from mitosis? |
Genetic Diversity
Standard 3.2.1: Explain the role of meiosis in sexual reproduction and genetic variation.
Standard 3.2.3: Explain how the environment can influence the expression of genetic traits.
Think about it: What advantages are there to having a genetically diverse population?
Think about it: How can the environment influence genetic traits?
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Punnett Squares: The Basics Standard 3.2.2: Predict offspring ratios based on a variety of inheritance patterns (including dominance, co-dominance, incomplete dominance, multiple alleles, and sex-linked traits). Think about it: What is the difference between a dominant allele and a recessive allele? What must the genotype be for a recessive trait to appear? |
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Genetic Diseases Standard 3.2.2: Predict offspring ratios based on a variety of inheritance patterns (including dominance, co-dominance, incomplete dominance, multiple alleles, and sex-linked traits). Think about it: Why are dominant diseases much more likely to be inherited in families that carry the traits, as compared to recessive diseases? |
Punnett Squares: Incomplete Dominance
Standard 3.2.2: Predict offspring ratios based on a variety of inheritance patterns (including dominance, co-dominance, incomplete dominance, multiple alleles, and sex-linked traits).
Think about it: Why is it that with incomplete dominance, you get a blend of both traits in the heterozygous individuals?
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Punnett Squares: CodominanceStandard 3.2.2: Predict offspring ratios based on a variety of inheritance patterns (including dominance, co-dominance, incomplete dominance, multiple alleles, and sex-linked traits). Think about it: Why is it that both traits are present in a heterozygous individual in codominant genetic examples? |
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Punnett Squares: Blood-TypingStandard 3.2.2: Predict offspring ratios based on a variety of inheritance patterns (including dominance, co-dominance, incomplete dominance, multiple alleles, and sex-linked traits).
Think about it: For two Type-A individuals to have a child with Type-O blood, what must their genotypes be? |
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Punnett Squares: Sex-Linked TraitsStandard 3.2.2: Predict offspring ratios based on a variety of inheritance patterns (including dominance, co-dominance, incomplete dominance, multiple alleles, and sex-linked traits).
Think about it: Why are males much more likely to inherit a sex-linked condition, such as colorblindness, than females? |
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PedigreesStandard 3.2.2: Predict offspring ratios based on a variety of inheritance patterns (including dominance, co-dominance, incomplete dominance, multiple alleles, and sex-linked traits).
Think about it: How are pedigrees used to determine inheritance patterns? What clues could indicate a dominant vs. recessive condition? |