7/8 Grade Chapter 4 Science Test

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Across
  1. 2. alleles for a dominant trait are represented by these
  2. 6. random change in the ratio of alleles in population,genetic
  3. 7. an organism's genotype determines this
  4. 8. natural selection when certain organisms survive
  5. 11. Mendel used these plants to study heredity
  6. 12. type of dominance, 2 traits produce blended phenotype
  7. 14. what you get when you cross a dominant and recessive trait
  8. 16. study of how traits are passed from generations
  9. 17. a black and a white horse make a two colored horse
Down
  1. 1. letters that help visualize a pea plant's genetics
  2. 3. dominance 2 traits present in hybrid offspring, no blend
  3. 4. gene that controls fur color in rabbits has 4 alleles
  4. 5. in codominance, both traits are present in this offspring
  5. 7. Mendel crossed these pea plants with green pods
  6. 9. multiples ones where a gene has more than two possible
  7. 10. trait that first appears or is visibly expressed
  8. 13. inheritance where 2 or more genes interact
  9. 15. alleles are different forms of these