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Genetics

Genetics . Chapter 11-1. Heredity - passing of traits from parents to offspring. Genetics - the study of heredity. “Father of Genetics”- Gregor Mendel; studied the traits of pea plants. Dominant - a trait that ALWAYS shows up or covers up the other form of the trait.

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Genetics

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  1. Genetics Chapter 11-1

  2. Heredity- passing of traits from parents to offspring

  3. Genetics- the study of heredity • “Father of Genetics”- Gregor Mendel; studied the traits of pea plants

  4. Dominant- a trait that ALWAYS shows up or covers up the other form of the trait • Represented by a CAPITAL letter • T, B, C…

  5. Recessive- trait that is “hidden” by another trait & seems to disappear • Represented by a lower case letter • t, b, c…..

  6. Genotype- genetic makeup of a trait • The 2 letters that represent a trait • Ex: TT, Tt,tt

  7. Phenotype- physical appearance or behavior of an organism • Ex: Tall, short, blonde…

  8. Hybrid- 2 DIFFERENT alleles for a trait • Ex: Bb, Nn • Hint: To remember think of a Hybrid Car that uses 2 DIFFERENT types of energy (electric & gas)

  9. Purebred- 2 of the same alleles for a trait • (think of purebred dogs…)

  10. Heterozygous- 2 DIFFERENT alleles for a trait • Ex: Bb, Tt, Ff…

  11. Homozygous- 2 of the SAME alleles for a trait • Ex: BB, bb, TT, tt…..

  12. Alleles- different forms of a trait • Can be dominant or recessive • Represented by letters

  13. Punnett Squares- tool used to predict the probability of certain traits • Shows the different ways alleles combine

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