4. One of the parents of a child has phenylketonuria (PKU), which is caused by

recessive alleles. The other parent does not have the PKU alloles. What is the

chance that the couple will have a child with phenylketonurla?

A. 0%

B. 50%

C. 75%

D. 100%

1. having to many fish in a pond can limit the amount of food and space available. 2. The cheetah population depends on the gazelle population for food.

Which of these organisms is most likely to be 100 micrometers in size a. lizard b. tree c. ant d. bacteria

You have 46 chromosomes in each of your somatic cells. If you cut your arm, how many chromosomes would be in each newly formed skin cell?

What are the whitish objects that eventually become seeds inside an ovary?

What are the three components of a necleotide

A toxin selectively kills astrocytes. How would their loss affect functions of the nervous system? a. loss of autonomic control of blood pressure and heart rate b. loss of the blood-brain barrier c. loss of all sensory function d.

The model that assumes that evolution proceeds with a slow successive change in a given evolutionary line are referred to a. the sympatric model. b. the allopatric model. c. successive descent model. d. gradualism. e. punctuated equilibrium

A small, fast moving river is in a V-shaped valley on the slope of a mountain. If you follow the river to where it passes through a plain, what will the river most likely look like compared with how it looked on the mountain?

Why is the model used to describe the plasma membrane called the fluid mosaic model?

Which statement best describes the limits of science? A. Science can answer only mathematical questions. O O B. Science can answer all questions. O C. Science cannot answer difficult questions. O D. Science cannot answer philosophical questions.