Recent Evidence Reveals That, Even at the Microscopic Level

question 14

Multiple Choice

Recent evidence reveals that, even at the microscopic level,

• A) it takes a change in several base pairs to influence human traits.
• B) approximately 85 percent of chimpanzee and human DNA is identical.
• C) biological events of profound developmental significance are the result of both genetic and nongenetic forces.
• D) simpler species have far more proteins than humans or primates.

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Definitions:

Interferon

A group of signaling proteins made and released by host cells in response to the presence of several pathogens, such as viruses, bacteria, parasites, and also tumor cells.

Viral Replication

Viral replication is the process by which viruses multiply within host cells, making copies of themselves and spreading infection.

Natural Killer Cells

A type of lymphocyte that plays a crucial role in the body's innate immune system by destroying infected or cancerous cells.

Active Immunity

Immunity developed by the body after exposure to a pathogen or through vaccination, leading to the production of antibodies.