How can DNA tell you how closely related two organisms are?
What will be an ideal response?
The more closely related two organisms are, the more similar their DNA sequences.
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The P wave of the ECG represents
A. the depolarization of the atria. B. the contraction of the ventricle. C. the repolarization of the atria. D. the relaxation of the atria. E. the contraction of the atria.
When considering the biomass of a photosynthetic organism for energy transfer studies, which of the following best explains why it is necessary to use the dry mass rather than the wet mass to determine productivity?
(A) The wet mass can vary widely due to differing concentrations of minerals in soil (B) The mass that is produced and added to the organism does not include the mass of water (C) Water has no caloric value (D) Water plays no role in primary productivity
You sample a population of butterflies and find that 56% are heterozygous at a particular locus. What should be the frequency of the recessive allele in this population?
A) 0.08 B) 0.09 C) 0.70 D) Allele frequency cannot be determined from this information.
Bacteria will often pass a piece of DNA from a donor bacterial cell to a recipient bacterial cell presumably through a structure called a pilus. What is this process called?
A) transduction B) conjugation C) transformation D) fission E) confirmation