In a tropical forest some leaves are dark green and some are light green. In a population of caterpillars, homozygous
dominant dark green caterpillars thrive eating the dark green foliage, while homozygous recessive light green caterpillars
thrive eating light green foliage. However, heterozygous caterpillars of an intermediate color green are easily seen by
birds and eaten, thus their numbers are far less than the dominants or recessives. This is an example of ____ selection.
a. directional
b. stabilizing
c. disruptive
d. frequent
e. mutational
ANSWER: c
You might also like to view...
What are the consequences of a viral infection of an animal cell?
A) rapid lysis or latent infections B) lysogeny followed by eventual lysis C) lysis or lysogeny D) Outcomes vary from rapid lysis to persistent infections, latent infections, or cancer.
Which organisms cause “red tides?”
(a) bacteria. (b) cyanobacteria. (c) euglenoids. (d) dinoflagellates.
Before examining a fungal cell under a microscope, you are told that it is a dikaryotic cell. Given that,
you should expect the cell to have
a. two complete sets of chromosomes. b. two nuclei. c. two hyphae. d. two complete sets of chromosomes and two nuclei. e. two nuclei and two hyphae.
Which of the following is least likely to be a
cause of extinction? a. asteroid impact b. human activity c. adaptive radiation d. continental drift e. climate change