Question

3. Draw a cell with three chromosomes as it moves through mitosis and cytokinesis.

4. Draw a cell with three chromosomes as it move through meiosis and cytokinesis.

5. Why are some cancers heritable and some are not? What is an example of a type of cancer that might be inherited and an example of one that is not?

6. Describe how chemotherapy, radiation, and immunotherapy are used to treat cancer. Describe how cancer cells look and act different than normal cells

7. Describe at least 3 different ways that meiosis and sexual reproduction increases genetic variability in offspring. What advantage does that give sexually reproducing organisms over asexually reproducing organisms? When is asexual reproduction an advantage over sexual reproduction?

8. Explain why there are many more males who are color blind than females. Draw a pedigree to help explain how colorblindness is inherited.

9. Choose a genetic disease/disorder and explain its symptoms and its pattern of inheritance.

10. Describe how an adaptation can become common in a population over time. What conditions must be necessary in order for that to happen? What is the mechanism for that to happen?

11. Describe the similarities and differences between artificial selection and natural selection. Give 2 examples of each.

Answer 1

1. Mitosis cell division -

2. Miosis cell division -

• 3. Inheritable and heritable cancer : ​​​​​​ Generally cancer caused by gene mutation or folt in cell division .when a mutation take palce in the gene which passed to the gamete and ultimately that cancerous gene is passed to the next generation that is known as heritary cancer ( for example - breast cancer and ovarian cancer ).
• Blood cancer and brain cancer are not heritable cancer.

4. Chemotherapy along with radiation and immunotherapy are the part of modern medicine use for cancer treatment . Generally by the use of effective radiation the uncontrolled growth is halted or killed .

In normal cell, the cell growth occurs in a controlled manner with the help of various factors .But in cancer cell the factors are unable to control the cellular growth ,as a result the cell divide in a uncontrolled manner .

​​​​​​​

NORMAL CELL CELL