In Wilms' tumor,
A) heart cells divide as frequently as do cells in the skin.
B) being exposed to cigarette smoke in the uterus causes lung cancer in infants.
C) cells in a child's kidney divide as frequently as if they were still in a fetus.
D) deletion of the retinoblastoma gene causes an eye tumor.
C) cells in a child's kidney divide as frequently as if they were still in a fetus.
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In the system of binomial nomenclature, species are assigned a two-part name: the first part is the ____ and the second
part is the ____name.
a. species; genus b. genus; species c. species; family d. genus; family e. family; species
Membranes that line the tubes and cavities of the digestive, respiratory, and reproductive systems are
called a. mucous. b. dense, regular. c. desmosomes. d. apocrine. e. serous.
The sense of balance relies on information from all of the following EXCEPT ____
a. eyes b. cochlea c. skin d. joints e. vestibular apparatus
What situation results when a population of spotted salamanders in an area of vernal pools remains stable for many years and was stabilized because of resource limits?
A) Density dependence is not involved. B) Predation has decreased. C) Carrying capacity has been reached. D) Density independence occurs.