Evolutionary change can occur when the frequency of alleles in a population changes. Which of the following describes a change in the allele frequency of a population due to chance?
A) founder effect
B) bottleneck effect
C) genetic drift
D) gene flow
Ans: C) genetic drift
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Which of the following groups of animals is found in the same environment, and has similar heat storage adaptations, as cheetahs?
A. Gazelles B. Rhinos C. Giraffes D. Elephants E. Hyenas
All of the following are true for soil with a low pH except:a
aluminum is more soluble. b. calcium phosphate becomes less soluble. c. acidic soil can be found in Pygmy forest in California. d. potassium is leached more readily from the soil. e. manganese may be available in toxic concentrations
The portion of the bone labeled B in the accompanying is called the:
a. periosteum
b. diaphysis.
c. epiphysis.
d. osteon.
e. metaphysis
A "mini-gene" has the base sequence TACCCGTGCACG. Which of the following sequences represents a single base substitution?
A) TACCCGGCACG B) TACCCGTGCACG C) TACCCGAGCACG D) TACCGTGCTACG E) TACCCGTGTCACG