Question

draw a feedback loop depicting the role of oncogenes and tumor suppressor genes in cancer

Answer 1

Answer:

Explanation:

A positive feedback loop takes places when when oncogenes are there because of mutation in the proto-oncogenes.

In this condition, the cells start multiplying uncontrollably.

Nothing can practically stop their growth.

Tumor suppressor genes in cancer make a negative feedback due to apoptosis in cells that can lead to a cancerous condition.

Therefore, Oncogenes happen due to the turning on of proto-oncogenes whereas tumor suppressor genes may cause cancer while they are turned off.

Answer 2

The role of oncogenes and tumor suppressor genes in cancer are:

• An important difference between oncogenes and genes that suppress the tumor is that oncogenes are derived from the activation (opening) of proto-oncogenes, but genes that suppress the tumor cause cancer when they are not activated (turned off).

• Genetic abnormalities in gene mutations have been found in some family cancers.

• The two main types of genes that play the role of cancer are oncogenes and the tumor suppressor gene.

• Oncogenes: Proto-oncogenes are genes that normally help cells to grow.

• A tumor suppressant, or anti-oncogene, a gene that controls a cell during cell division and reproduction.

• If the cell grows out of control, it will cause cancer.

• When a compression factor of a plant is altered, it results in the loss or reduction of its function.

• Along with other genetic mutations, this can allow the cell to grow abnormally.

• Loss of the function of these genes may be even more important in the development of human cancer, compared to the function of oncogenes.