Multiple Choice, 2 pts each:

1. In a monohybrid cross between individuals who are heterozygous for a trait exhibiting incomplete dominance, the expected offspring phenotypic ratio is
   1. 3:1. (incorrect)
   2. 2:1. (incorrect)
   3. 9:3:3:1. (incorrect)
   4. 1:1. (incorrect)
   5. 1:2:1. (PRECISELY!)
      Hint
2. A testcross involves mating the individual with the dominant phenotype with an individual whose genotype is
   1. homozygous recessive. (YAY!)
   2. homozygous dominant. (incorrect)
   3. heterozygous. (incorrect)
   4. codominant. (incorrect)
   5. incompletely dominant. (incorrect)
      Hint
3. Human somatic cells have 22 pairs of homologous ________ plus one pair of sex chromosomes.
   1. monosomes (incorrect)
   2. autosomes (BINGO!)
   3. ribosomes (incorrect)
   4. heterosomes. (incorrect)
   5. nucleosomes. (incorrect)
      Hint
4. The diagram at right illustrates
   1. anaphase I of meiosis. (HALLELUJAH!)
   2. anaphase II of meiosis. (incorrect)
   3. anaphase of mitosis. (incorrect)
   4. prophase II of meiosis. (incorrect)
   5. prophase I of meiosis. (incorrect)
      Hint