If the chromosomes crossed over equally, the resulting gametes would likely have the same number of genes.
a. true
b. false
Answer: a. true
(Equal crossing over usually recombines alleles without destroying the structure of genes along a chromosome.)
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A ribozyme catalyzes a reaction on itself and actually changes shape. This is an example of
A. intra-enzyme reactions. B. inter-enzyme reactions. C. intramolecular catalysis. D. intermolecular catalysis.
Which of the following are proto-oncogenes?
a. mutated genes b. normal genes c. genes found only in prokaryotes d. genes found only in plants
Over evolutionary time, flowering plants have
evolved colors, odors, and nectar that attract pollinating insects and the insects have evolved mechanisms that detect the changes in plants and to better collect pollen. This is an example of
a. exaptation. b. phylogenetic change. c. coevolution. d. convergent evolution. e. sympatric speciation
Agents that are static and, therefore, do not kill infecting microorganisms are not useful as chemotherapeutic agents.
Answer the following statement true (T) or false (F)