What is a simple definition of an allele?
What will be an ideal response?
An allele is a variant form of a gene.
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Cnidarians have _____ symmetry
A. no B. radial C. bilateral D. circular
You are examining an electron micrograph of cells obtained from a new deep-sea life form. Upon closer examination, you notice that there are two dark lines separated by a lightly stained region. These results are similar to the observation of which investigator(s) of membrane structure?
A) Robertson B) Gorter and Grendel C) Unwin and Henderson D) Overton E) Singer and Nicolson
Carriers
A. may have a persistent infection. B. may be a source of infection. C. usually show symptoms of the disease. D. have been cured of the infection. E. may have a persistent infection AND may be a source of infection.
In order to show that DNA in cell extracts is responsible for genetic transformation in pneumococcus, important corroborating evidence should indicate that _______ also destroy transforming activity.
A: enzymes that hydrolyze DNA B: enzymes that hydrolyze RNA C: enzymes that hydrolyze polysaccharides D: boiling E: enzymes that hydrolyze proteins