The recessive allele of a gene causes cystic fibrosis. For this gene among Caucasians, p = 0.98. If a Caucasian population is in Hardy-Weinberg equilibrium with respect to this gene, what proportion of babies is born homozygous recessive and therefore suffers cystic fibrosis?

A road that dichotomizes is

a. an intersection of two crossroads. b. a road that forks into two roads. c. a road that has numerous entrances and exits. d. a road that leads nowhere.

Outside the brain and spinal cord, which cells provide insulation to nerves?

a. microglia b. astrocytes c. oligodendrocytes d. Schwann cells e. satellite cells

Class __________ includes mostly extinct species and a few current species such as feather stars and

sea lilies. a. Asteroidea b. Holothuroidea c. Ophiuroidea d. Echinoidea e. Crinoidea

Select the best response to the question. ?What is a consequence of untreated tapeworm?

A) anal itching B) abscesses C) anemia D) seizures