Analysis of the sequences of the small subunit rRNA generated a shift in our current taxonomic scheme, with the addition of three levels called domains. What are the three domains?
What will be an ideal response?
Bacteria, Archaea, Eucarya
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How are parasitoids different from typical brood parasites?
a. they are usually not insects b. they affect only plants c. they lay eggs inside a host, which is eventually killed d. they fool another species into caring for their young e. they usually only affect the eggs of birds
Which brain structure is incorrectly matched with its function?
a. thalamus?relays messages to cerebrum b. pons?regulates emotional response c. medulla?regulates coughing and sneezing d. cerebellum?regulates muscle coordination e. inferior colliculi?regulate auditory reflexes
What is the primary problem with bacteria that are resistant to antibiotics?
What will be an ideal response?
The example of ocean and lake stickleback fishes indicates that morphology can be altered by
A) changing only the sequences of protein-coding genes. B) altering the expression of a gene that is associated with development in only some parts of the body. C) environmental factors (such as pollution). D) the elimination of a gene from a population, which leads to loss of the body armor.