Interbreeding two different species of lovebirds produces offspring unable to build a nest after they mature because they lack the innate knowledge needed to carry the nesting materials. The hybrid offspring do not reproduce, and this limits genetic
mixing of the two species. This is an example of:
A) gametic inviability. B) behavioral isolation.
C) hybrid infertility. D) sympatric speciation.
Answer: C
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Restriction fragment length polymorphisms are used to
a. test the effectiveness of different restriction enzymes on a sequence of DNA. b. compare the DNA sequences between individuals by looking for changes in restriction enzyme digest patterns. c. compare DNA sequences by determining the full DNA sequence. d. prepare DNA for further sequence analysis. e. treat sickle-cell anemia.
Solenopsis invicta is a species of ant that was
introduced in the United States from
a. South America. b. Canada. c. Asia. d. Africa. e. Europe
If a trait is heritable, then individuals with a genetic relatedness of 0.5 are expected to
A) exhibit more phenotypic similarity than two random individuals in the population. B) be as similar in phenotype as a pair of random individuals in the population. C) have identical phenotypes because they are twins. D) have an average phenotypic value that is close to the mean of the population.
Based on the way natural selection works, what is the best way to make use of antibacterial soap?
A) Always use it because most bacteria will cause illness. B) Never use it because all bacteria are harmless. C) Never use it because bacteria will evolve to become resistant to it. D) Always use it because it is unlikely that bacteria will evolve to become resistant to it. E) Use it only when you need to be free of bacterial contamination, so bacteria will be less likely to evolve resistance to it.