If a small population of mice colonizes a new area away from the range of the original species, the
colony that is geographically isolated may eventually evolve into a new species. These events can be
used to describe:a.
allopatric speciation.
b. hybridization.
c. allopolyploidy.
d. adaptive radiation.
e. sympatric speciation.
A
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_____ mutations affect only the individual in which they occur; _____ mutations are passed from parent to offspring
A. Somatic; germ-line B. Germ-line; somatic C. Germ-line; heritable D. Somatic; point E. Point; germ-line
The daughter cells produced by meiosis are ____
a. identical to the parent but genetically different from each other b. identical to each other but genetically different from the parent c. genetically different from the parent and each other d. genetically identical to the parent and each other e. genetically different from each other but with the same chromosome number as the parent
Which outcome could help you identify a trait whose expression is determined by the effects of two or more genes (polygenic inheritance)?
A. A mating between a homozygous and a heterozygous individual produces more than the expected number of offspring expressing the dominant trait. B. The trait varies along a continuum in the population. C. All of the alleles of the gene for that trait are equally expressed. D. Pleiotropy occurs.
What is happening when a neuron is at rest before an action potential?
A) The membrane is depolarized. B) Membrane ion channels are open. C) Potassium is diffusing out of the cell. D) The inside of the neuron is negative relative to just outside the neuron.