The Current Thinking About Genes and the Environment Is That

question 37

Multiple Choice

The current thinking about genes and the environment is that:

• A)the environment is necessary to trigger genetic programs
• B)genes are important early in development but wane with age
• C)both genes and environment are important throughout the life span
• D)some of the above

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Definitions:

Water Molds

Water molds, or Oomycetes, are a group of filamentous, fungus-like organisms living in water or damp environments, often causing diseases in plants and fish.

Flagellum

A slender, whip-like appendage that enables many protozoa, bacteria, and spermatozoa to swim.

Microvilli

Minute projections of the plasma membrane that increase the surface area of the cell; found mainly in cells concerned with absorption or secretion, such as those lining the intestine or the kidney tubules.

Choanoflagellate

Single-celled organisms that are considered to be the closest living relatives of animals, characterized by a flagellum surrounded by a collar of microvilli.