Answer: The correct answer is -
d) a dominant trait that depends on the presence of only one of many dominant alleles.
Glaucoma is an autosomal dominant trait, meaning that presence of single copy of the defective gene is enough to cause the disease.
It corresponds to a group of diseases, which cause damage in the optic nerve, leading to loss of vision and if not treated, it ultimately leads to blindness.
Thus, option D) is the right answer.
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
Learn more about virues :
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<h2>Modern Abiogenesis Hypothesis</h2>
Explanation:
- American physicists Harold Urey and Stanley Miller consolidated warm water with water fume, methane, smelling salts, and atomic hydrogen. These beat with electrical releases. These parts were intended to recreate the crude sea, prebiotic air, warmth, and lighting
- After seven days they found that basic natural atoms, for example, amino acids had framed
- Hence the Miller-Urey try effectively delivered atoms from inorganic parts thought to have been available on the prebiotic earth
- Hence, the right answer is "Modern abiogenesis hypothesis is based on Oparin- Haldane theory and Miller- Urey experiment"
