Extinction is most likely an example of ____
a. microevolution
b. macroevolution
c. orthogenesis
d. uniformitarianism
e. gradualism
ANSWER: b
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A change in the chromosome number is called a point mutation
Indicate whether the statement is true or false
A pure-breeding fruit fly with curled wings mates with a pure-breeding fruit fly with normal (straight) wings. The F1 mate with each other to produce an F2 generation that consists of 160 flies with curled wings and 80 with straight wings. What can you infer from this observation?
A) Curled wings is a recessive trait. B) The dominant curled wing allele is also a recessive lethal. C) Wing shape is controlled by two codominant alleles. D) Two interacting genes determine wing shape. E) All of the hybrid F1 flies had straight wings.
Which type of microscope has the greatest resolving power?
a. light microscopes. b. electron microscopes
In evaluating the hypothesis test on experimental data, all the following will change the resulting test statistic except for what?
A. Number of subjects receiving the treatment B. Hypothesized value in the null hypothesis C. Number of subjects receiving the control D. Confidence level