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Heredity & Genetics

Heredity & Genetics . Heredity. The study of the passing on of traits from parents to kids . Learn how and why physical and behavioral characteristics are passed on to from parents to offspring. Trait. A person’s behavioral and physical characteristics.

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Heredity & Genetics

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  1. Heredity & Genetics

  2. Heredity • The study of the passing on of traits from parents to kids. • Learn how and why physical and behavioral characteristics are passed on to from parents to offspring.

  3. Trait • A person’s behavioral and physical characteristics. • Example: brown hair, blue eyes, etc. • Can also be behavioral such as personality.

  4. Gene • A specific trait. • Example: hair color is a trait whereas a gene is the specific color such as brown. • Trait = Hair Color/ Gene = Brown, Blonde, Red • Trait = Height / Gene = Tall or Short • Trait = Personality / Gene = Outgoing, Quiet

  5. Offspring • A child in relation to its parents.

  6. Phenotype • A person’s physical characteristics. • Example: Tall or short, Blonde or brunette, etc. Gg =

  7. Genotype • An organisms genetic code represented by letters. • Example: AA, Aa or aa • Gg GG

  8. Allele • The different forms of a trait that a gene might have. • Example: GG or Gg

  9. Dominant • A trait that covers up another trait. • Example: An uppercase “A”.

  10. Recessive • A trait that gets covered up by an dominant trait. • Example: An lower case “a”.

  11. Homozygous • Having two identical alleles for a trait. • Example: AA or aa

  12. Heterozygous • Having two differentalleles for a trait. • Example: Aa

  13. Purebred • Both alleles are the same. The same genetic code is passed on by both parents. • Example: AA

  14. Hybrid • The two alleles for a trait are different. The genetic code that is passed on by each parent is different. • Example: Aa

  15. Chromosome • A threadlike strand that contains DNA and is found in the nucleus 0f each cell. Humans have 23 unique chromosomes. • Example:

  16. DNA • Found in the chromosomes and transmits genetic information. • Example:

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