Multiple choice: Select the best answer for each of the following:

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For questions 1-4, you need to know that the grey wolf has a diploid chromosome number of 78.

1. What is the haploid number for the grey wolf?

   1. 78
   2. 2
   3. 39
   4. none of the above

2. How many chromosomes are there in one full set of chromosomes in the grey wolf?

   1. 78
   2. 2
   3. 39
   4. none of the above

3. How many sets of chromosomes are there in the lung cells of a grey wolf?

   1. 78
   2. 2
   3. 39
   4. none of the above

4. How many sets of chromosomes do eggs from a grey wolf contain?

   1. 78
   2. 2
   3. 39
   4. none of the above

5. What is the correct order of the phases of the cell cycle in a human skin cell?

   1. G0, G1, G2, S, M, cytokinesis
   2. G0, G1, S, M, cytokinesis
   3. G0, M, S, G1, G2, cytokinesis
   4. G0, G1, S, G2, M, cytokinesis

6. In producing new liver cells, why must S phase come before mitosis?

   1. Two sets of chromosomes must be available before mitosis so that each of the two daughter cells will have an entire set of chromosomes.
   2. The cell needs ample time to rest before beginning mitosis.
   3. The cell must have large chromosomes and organelles so that the two daughter cells produced during mitosis can function properly.
   4. The chromosomes must be duplicated before mitosis to provide genetic variability in the two daughter cells produced.

7. In producing eggs and sperm, why must the DNA be divided to half its "normal" amount in somatic cells?

   1. Reducing the number of chromosomes in eggs and sperm provides genetic variability in these gametes.
   2. DNA must be divided in half so that each egg or sperm daughter cell is identical to its parent germ cell.
   3. The DNA in eggs and sperm must be divided in half so that when they later join together as a fertilized egg, the egg has a "normal" amount of DNA.
   4. DNA in eggs and sperm must be divided in half for these gametes to maintain their diploid number of chromosomes.

8. What type of cells does mitosis produce?

   1. Mitosis produces two haploid somatic cells.
   2. Mitosis produces two diploid somatic cells.
   3. Mitosis produces two diploid gamete cells.
   4. Mitosis produces two haploid gamete cells.

9. What type of cells does meiosis produce?

   1. Meiosis produces four haploid gamete cells.
   2. Meiosis produces four haploid somatic cells.
   3. Meiosis produces four diploid gamete cells.
   4. Meiosis produces four diploid somatic cells.