Concept Check 9.1
1. Relate cell reproduction to the replacement of skin cells.
2. Describe two ways in which asexual and sexual reproduction differ.
3. How is cell division involved in growth?
Concept Check 9.2
1. Describe how the appearance of chromosomes changes as a cell is about to divide.
2. Interphase used to be described as a resting phase. Why is this description inaccuracte?
3. Summarize the events that occur during mitosis and cytokinesis.
Concept Check 9.3
1. Describe a significant event that occurs in each of the four stages of mitosis.
2. Compare and contrast cytokinesis in animal and plant cells.
3. In what sense may prophase and telophase in mitosis be characterized as opposites?
Concept Check 9.4
1. List two differences between benign and malignant tumors.
2. How might drugs that interfere with mitosis be effective in treating cancer?
3. How is cancer related to cell reproduction?
Concept Check 9.5
1. Describe how homologous chromosomes are different from sister chromatids.
2. Compare the number of sets of chromosomes in human gametes with the number of sets in other cells in
the body.
3. How does meiosis I reduce the number of chromosomes in the daughter cell?
4. What is the final result of meiosis?
Concept Check 9.6
1. Draw a diagram that shows the chromosome combinations that are possible in the haploid gametes of an
organism with a diploid number of 6.
2. Describe how crossing over during meiosis in an individual organism recombines the genetic material of
the organism’s two parents.
3. Describe the two differences between meiosis and mitosis.