What are the non-coding segments of DNA called?
a. introns
b. exons
c. promoters
d. transcription factors
e. knockouts
ANSWER: a
You might also like to view...
Which of the following nonpathogenic protozoa has a very large glycogen vacuole in its cyst form and measures approximately 5 to 20 µm in diameter?
a. E. coli b. I. butschlii c. E. dispar d. E. nana
Birds and mammals share which of the
following characteristics?
a. ectothermy b. air pocketed bones c. bladders d. four-chambered heart e. more than one of these
Which period is the most recent?
a. Triassic b. Silurian c. Devonian d. Permian e. Cambrian
Environmental resistance is
A) a factor that decreases both death rates and birth rates. B) limits imposed on population growth by only the nonliving environment. C) limits imposed on population growth by only the living environment (e.g., predators or competitors). D) a factor that increases both death rates and birth rates. E) limits imposed on population growth by both the living and nonliving environments.