The disease phenylketonuria is an example of how what?

A. a single gene can only affect a single trait.

B. a single gene can affect multiple traits.

C. all of these

People on high-protein diets are advised to drink lots of water. Why? A) To reduce the strain on the kidneys due to increased urea production. B) To provide the H2O necessary for peptide bond hydrolysis.

Which tissue is not found in animals

When does meiosis occur?

What two features are first seen in the marine worms

Cell theory teaches that

In separate marshes, small populations of three species occur: grass fish, which disperse only in extreme rains and have an average dispersal of 1 individual every 45 generations, swamp rats, which occasionally disperse over land, averaging 2

3. Which of the following is the term for the energy of motion? 1) potential energy 2) kinetic energy 3) tension 4) momentum

Describe the process through which allopatric speciation splits 1 species into 2 distinct ones

What is an example of a limiting factor that humans use to control the carrying capacity of an environment for a particular type of organism? Explain your answer.

How does natural selection support the theory of evolution? A. Natural selection explains how the changes in life forms that evolve over millions of years take place over shorter periods of time. B.