If a woman is a carrier for the color-blind recessive allele and her husband has normal vision then there will be 50% chance that a son will be color-blind
If you're color blind, you see colors differently from the majority of people. Color blindness frequently makes it challenging to distinguish between particular hues. Color blindness typically runs in families. Although there is no cure, specific eyewear such as contact lenses can help.
The only form that truly embodies the phrase "color blind" is achromatopsia, sometimes known as "total color blindness." Achromatopsia is a condition in which a person can only perceive the world in shades of grey, black, and white. Red-detecting cone cells or pigments are absent in those with protanopia color blindness. They consequently don't perceive red or orange colors as well.
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Answer:D. To Make it helpful for humans
Explanation:
I'm not entirely sure on this one... But I think it's 1. cell division helps animals repair old cells..
like please
Answer: Infection occurs when the host is exposed to pathogens. virus uses the cell's metabolism, and replicates itself while destroying the cell or changing the cell's genetic makeup.
Explanation:
- A virus is a miniscule pocket of protein that contains genetic material.
- Viruses pose a considerable challenge to the body’s immune system because they hide inside cells.
- This makes it difficult for antibodies to reach them. Some special immune system cells, called T-lymphocytes, can recognise and kill cells containing viruses, since the surface of infected cells is changed when the virus begins to multiply.
- Many viruses, when released from infected cells, will be effectively knocked out by antibodies that have been produced in response to infection or previous immunisation.
- Antibiotics are useless against viral infections. So antiviral drugs work differently to antibiotics, by interfering with the viral enzymes instead.
Hence virus are the pathogen that use the cell's metabolism. And replicate itself while destroying the cell or changing the cell's genetic makeup. viruses are so simple that they use their host cells to perform their activities for them
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