Question

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

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

3. 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?

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

6. 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?

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

8. 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?

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

Answer 1

Answer :5

Chemotherapy is a drug treatment that uses powerful chemicals to kill fast-growing cells in your body.

Chemotherapy is most often used to treat cancer, since cancer cells grow and multiply much more quickly than most cells in the body.

Many different chemotherapy drugs are available. Chemotherapy drugs can be used alone or in combination to treat a wide variety of cancers

Radiotherapy is a cancer treatment that uses high doses of radiation to kill cancer cells and shrink tumors. At low doses, radiation is used in x-rays to see inside your body, as with x-rays of your teeth or broken bones.

Immunotherapy, also called biologic therapy, is a type of cancer treatment that boosts the body's natural defenses to fight cancer. It uses substances made by the body or in a laboratory to improve or restore immune system function. Immunotherapy may work by: Stopping or slowing the growth of cancer cells.

The cancer cells don't follow the nature of normal cell division and divide continuously and invade other tissues and organs forming a tumour. This property is called neoplasticity.

The normal cells have a normal cell division rate and the cells die due to the property of apoptosis. The cancer cells have lost the property of apoptosis.