1. Somatic cells in humans are diploid.
2. Haploid cells are used for reproduction. Therefore, they have one set of chromosomes.
3. A diploid parent has 46 chromosomes. How many chromosomes are in the haploid daughter
cells? 23
4. During prophase I the chromosomes have already been duplicated. True
5. What happens during crossing over? Non-sister chromatids exchange genetic
information.
6. Double (duplicated) chromosomes separate during metaphase I—false
7. After meiosis I the daughter cells are haploid-True
8. What separates during meiosis II? Sister chromatids.
9. How many cell divisions occur in meiosis? 2
10. When does "crossing over" occur? Prophase I
11. Does meiosis I or II more closely resemble mitosis? Meiosis II
12. Mitosis produces 2 diploid daughter cells while meiosis produces: 4 haploid daughter cells
13. TRUE: Producing recombinant chromatids via crossing over increases genetic diversity.
14. FALSE: Homologous chromosomes align the same way every time they line up during
Metaphase I.
15. Which of the following questions about genetic diversity could most could most appropriately
be answered by analysis of the model in Figure 1? C) How does the independent
assortment..
16. Insulin is a hormone produced by some pancreatic cells. Scientists have isolated the DNA
sequence that codes for human insulin production. Which of the following best predicts the
effect of inserting this gene into the DNA of a bacteria cell? The recombinant bacterium will
produce human insulin using its own machinery
17. The researchers choose a signifcance level of p = 0.05. Which of the following best
completes the chi-square goodness of fit test? The calculated chi-square value is 9.24, and
the critical value is 7.82. The null hypothesis of independent assorrtment can be rejected.
18. The Russian blue is a rare breed of cat that is susceptible to developing cataracts on the
eyes. Scientists hypothesize that this condition is inherited as a result of a mutation. Figure 1
shows a pedigree obtained in a study of cats owned by members of the Russian Blue Club in
Sweden. Based on the inheritance pattern shown in Figure 1, which of the following best
predicts the nature of the original mutation? A recessive mutation on a somatic chromosome
19. Two sweet pea plants that are heterozygous for both flower color and pollen grain shape are
crossed with one another. A geneticist is surprised to observe that there are far fewer round,
purple offspring and long, red offspring than were predicted by the 9:3:3:1 expected phenotypic
ratio. Which of the following statements provides the most reasonable prediction to account for
the deviation from the expected results? In sweet pea plants, the gene for flower color and
the gene for pollen grain shape are genetically linked.
20. The critical value for a chi-square test with a significance level of p=0.05 and 2 degrees of
freedom is 5.99. Which of the following statements best completes the student’s chi-square
goodness-of-fit test? The calculated chi-square value is 1.53, and the null hypothesis
cannot be rejected.
