A suggested and testable explanation for an event is called a ________.
a) control
b) theory
c) hypothesis
d) variable
Ans: c) hypothesis
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Genetic studies of an animal show that eye color is controlled by an autosomal gene with the dominant allele (R) for red
eye color and the recessive allele (r) for yellow eye color. A second autosomal gene has the dominant allele (T) for paws with thumbs and the recessive allele (t) for paws without thumbs. The genetic cross RRTT x rrtt creates offspring with genotype RrTt. One of those dihybrids is mated in a testcross (RrTt x rrtt). Based on the principle of independent assortment, the testcross should produce offspring with the phenotype ratio ____.
a. 3 red-eyed with thumbs : 1 yellow-eyed without thumbs b. 1 red-eyed with thumbs : 1 yellow-eyed with thumbs: 1 red-eyed without thumbs: 1 yellow-eyed without thumbs c. 1 red-eyed with thumbs : 1 yellow-eyed without thumbs d. 9 red-eyed with thumbs : 3 yellow-eyed with thumbs: 3 red-eyed without thumbs: 1 yellow-eyed without thumbs e. 3 yellow-eyed with thumbs : 1 red-eyed without thumbs
Differentiate between reception, transduction and response in cell signaling and provide an example
What will be an ideal response?
Compact bone
What will be an ideal response?
An activator protein would have which of the following effects on an operon with a positive control mechanism?
a. Stimulate transcription. b. Turn off transcription. c. Stimulate transcription when a coactivator is bound to the allosteric site. d. Inhibit transcription when a coactivator is bound to the allosteric site. e. Activator proteins only work on operons under negative control.