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 green foliage;
homozygous recessive light green caterpillars
thrive eating light green foliage; heterozygous
caterpillars of an intermediate color green are
easily seen by birds and eaten, thus there
frequency is far less than the dominants or
recessives. This is an example of ___ selection.
a. directional
b. stabilizing
c. disruptive
d. frequent
e. mutational
C
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The distal tubule is indicated by
a. A. b. B. c. C. d. D. e. none of these.
Organisms living on the sediment surface of sandy and muddy beaches are collectively referred to as ________
Fill in the blank(s) with correct word
Evidence for the three domain system comes from sequencing the rRNA that changes slowly during evolution.
a. true b. false
Two bacterial strains have the same genes for metabolizing a carbohydrate, but one is wild-type for a regulatory inducer while the genetic variant does not produce the inducer. Which of the following statements is CORRECT with regard to the metabolic pathway enzymes?
A) The bacteria have the same phenotype. B) The bacteria have the same genotype but different phenotypes. C) The genotypes and phenotypes of the bacteria are the same. D) The bacteria are phenotypically the same but have different genotypes. E) The answer cannot be determined from the information provided.