The allele responsible for the Siamese coat-color pattern produces an unstable tyrosinase enzyme. This type of gene product is an example of what type of allele?

What will be an ideal response?


temperature-sensitive

Biology & Microbiology

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In comparing innate immunity to adaptive

immunity, which of the following statements is (are) correct?

a. Innate immunity has a response time of about a week; adaptive immunity has an immediate response time. b. Innate immunity uses billions of different antigen receptors to detect antigens; adaptive immunity has a fixed set of receptors. c. Innate immunity does not target specific antigens; adaptive immunity does target specific antigens. d. Innate immunity has a long persistence; adaptive immunity does not persist. e. Both a and b are correct

Biology & Microbiology

Explain the mechanics of muscle contraction during a heartbeat, including the stimulus for the contraction

What will be an ideal response?

Biology & Microbiology

Transmission of the pathogen of leishmaniasis is by the

A. tsetse fly. B. phlebotomine (sand) fly. C. reduviid, "kissing," bug. D. hard bodied tick. E. Anopheles mosquito.

Biology & Microbiology

At current (2007) rates of consumption, and given current estimates of known reserves, the predicted length of time to exhaustion of world oil supplies is about ____ years.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology