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Unit 6 “Genetics”

Unit 6 “Genetics”. 18 Words. Genetics. Science of heredity. Allele. Alternative form that a single gene may have for a particular trait. Dominant. Mendel’s name for a specific trait that appeared in the F1 generation. Recessive.

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Unit 6 “Genetics”

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  1. Unit 6“Genetics” 18 Words

  2. Genetics Science of heredity

  3. Allele Alternative form that a single gene may have for a particular trait.

  4. Dominant Mendel’s name for a specific trait that appeared in the F1 generation.

  5. Recessive Mendel’s name for a specific trait hidden or masked in the F1 generation.

  6. Homozygous Organism with two of the same alleles for a specific trait.

  7. Heterozygous Organism with two different alleles for a specific trait.

  8. Genotype An organism’s allele pairs. *Genetic Code*

  9. Phenotype Observable characteristic that is expressed as a result of an allele pair. * Physical: You can see it*

  10. Law of Segregation Mendelian law stating that the two alleles for each trait separate to form different reproductive cells during meiosis.

  11. Law of Independent Assortment Mendelian law stating that different genes independently separate from one another when reproductive cells are formed

  12. Carrier Individual heterozygous for a recessive disorder such as cystic fibrosis or Tay-Sachs Disease

  13. Pedigree Diagrammed family history that is used to study inheritance patterns of a trait through several generations and that can be used to predict disorders in future offspring

  14. IncompleteDominance Complex inheritance pattern in which the heterozygous phenotype is intermediate between those of the two homozygous parent organisms. *Red Flower + White Flower = pink*

  15. Codominance Complex inheritance pattern that occurs when neither allele is dominant and both alleles are expressed. * Roan Cows *

  16. Autosome Chromosome that is NOT a sex chromosome

  17. SexChromosome X or Y Chromosome; paired sex chromosomes determine an individual’s gender XX = Girl XY = Boy

  18. Karyotype Micrograph in which the pairs of homologous chromosomes are arranged in decreasing size

  19. Sex Linked Characteristic—such as red-green color blindness or hemophilia—controlled by genes on the X- chromosome

  20. The End

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