A potential cancer-causing gene coding for a protein with cell cycle control responsibilities is a carcinogen, and a gene coding for a protein that stimulates cell division is a proto-oncogene.
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What is carcinogen?</h3>
- Anything that has the potential to cause cancer is a carcinogen.
- They fall into three main categories: oncogenic (cancer-causing) viruses, physical carcinogens, and chemical carcinogens (including those derived from biological sources).
- The majority of carcinogens, either alone or in combination, cause cancer by interacting with cell DNA and impairing healthy cellular function.
- As a result, a tumour (an abnormal tissue development) eventually develops.
- Tumors have the capacity to spread (metastasize) from their original sites, invade, and cause dysfunction in other tissues, leading to organ failure and death.
- The two main ways that carcinogens cause these tumors to develop are through DNA changes that promote cell division and stop cells from being able to self-destruct in response to common triggers like DNA damage or cellular injury (apoptosis).
- There are substances known as carcinogens that cause cancer by means of non-genotoxic processes such immunosuppression and the development of tissue-specific inflammation.
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Three examples would be enzymes, antibodies, and receptors. Hope this helps. :)
Gametes are sex cells. The reproductive system.
<span>The right answer is D. males have only one copy of the X chromosome.
</span>Hemophilia is a rare hereditary bleeding disorder disease. The blood of hemophiliacs does not coagulate normally. Bleeding is not more important, but without treatment, they can be more frequent and last longer than normal. Hence the importance of good monitoring and good treatment.
<span>The 2 types of hemophilia A and B are recessive and X-linked, but a third of hemophilia correspond to a de novo mutation. It is observed that a man who wears the X is always affected by the disease (because he has only one X chromosome in its genome) whereas the woman is only a carrier (she has two X chromosomes, so it can carry a safe X and a mutated X without being attempted by the disease but can transmit it to her descendants). This must be taken into account for genetic counseling.</span>
I believe the answer is C). My reason for this is because multipotency stands for multidifferentiative potential. And this is the ability to generate progeny of quite a few distinct cell types. And adult stem cells have that ability. Hope this helps.
