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What is necessary for the production of a malignant tumor?
assuming the answers are A.) activation of an oncogene in the cell B.) the inactivation of tumor-supressor genes within the cell C.) presence of mutagenic substances within the cell's environment D.) the presence of a retrovirus within the cell E.) both A and B are necessary It is A.)
The two types of cell cycle genes if mutated cause cancer cells to divide uncontrollably are called tumor suppressor genes and?
The two types of cell cycle genes that cause cancer cells to divide uncontrollably if mutated are called tumor suppressor genes and antioncogene
Why is gene regulation an important issue in gene therapy?
several genes may play a part in turning other genes on and off. For example, certain genes work together to stimulate cell division and growth, but if these are not regulated, the inserted genes could cause tumor formation and cancer
Why cancer is caused by multifactorial traits?
because it have two clases of genes involved: oncogenes and tumor suppressor genes
Do tumor viruses contain genes found in normal cells?
Yes, tumor viruses can contain genes found in normal cells. Some tumor viruses are able to integrate their genetic material into the host cell's genome, which can disrupt normal cellular functions and lead to uncontrolled cell division and tumor formation.
What causes Wilms' tumor?
Hello, I see you are asking "What are the causes for wilms tumor and pseudohermaphroditism?" Doctors have found that some Wilms tumors have changes in specific genes: A small number of Wilms tumors have changes in or loss of the WT1 or WT2 genes, which are tumor suppressor genes found on chromosome 11. Changes in these genes and some other genes on chromosome 11 can lead to the overgrowth of certain body tissues. For more information, you can visit this URL - mentalhealthhelpcenter. com/condition/wilms-tumor-and-pseudohermaphroditism/c/41034
What are three categories of genes that when mutated can lead to tumor formation?
· 1) Genes involved in cell division · 2) Oncogenes o Dominant-acting stimulatory genes o Normally low levels or expression is turned off o Mutation causes increased/hyper expression · 3) Tumour suppressor genes o Recessive-acting genes o Normally expressed to inhibit cell division o Mutation causes defects in product or no expression
What are two types of genes that when disrupted can cause cancer?
The two genes considered responsible for the cause of cancer are the oncogene and the tumor suppressor gene.
How does agrobacterium work?
Using agrobacterium is the most common way of genetically modifying plants. Inside the bacterium there is a circular piece of DNA called a plasmid, which also has a chromosome. This TI plasmid is tumor inducing but it transfers the plasmid DNA by infecting the plants DNA (it cuts the chromosome of the plant and inserts the plasmid). The bacterium live inside the tumor of the plant. Scientists tooks the T dna, removed the tumor causing genes, and left the DNA splicing genes. They then use the bacterium to transfer the DNA they want.
How do tumor suppressor genes work to prevent the development of cancer?
Tumor suppressor genes help prevent cancer by regulating cell growth and division. They can repair damaged DNA, trigger cell death, or stop cells from dividing uncontrollably. When these genes are mutated or inactive, cells can grow out of control, leading to the development of cancer.
Do tumor viruses contain genes that are found in normal cells?
not in all cases, however, but yes
What are tumor suppressor and oncogenes genes?
Tumor suppressor genes are normal genes that carry out several functions: * slow down cell division * repair mistakes made when DNA is being replicated * tell cells when to die (a process known as apoptosis or programmed cell death) A mutation in a tumor suppressor gene allows cells to grow out of control, which can lead to cancer ie the growth of a tumor. About 30 tumor suppressor genes have been identified, including p53, BRCA1, BRCA2, APC, and RB1. A good analogy for tumor suppressor genes is the brake pedal on a car - it normally keeps the cell from dividing too quickly just as a brake keeps a car from going too fast. If the brakes on a car fail, the car goes out of control; similarly, when something goes wrong with the gene, such as a mutation, cell division can get out of control. See: http://www.cancer.org/docroot/ETO/content/ETO_1_4x_oncogenes_and_tumor_suppressor_genes.asp http://envirocancer.cornell.edu/FactSheet/Genetics/fs6.TSgenes.cfm http://www.cancerquest.org/index.cfm?page=52
