Sickle-cell disease is an example of
A) pleiotropy.
B) polygenic inheritance.
C) a trait with more than two alleles.
Answer: A
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Experimental mutations in the timing of Hox gene expression cause lab mice to develop deformed limbs. This is an example of
A. evolution of a new gene to code for the new morphology. B. homeosis. C. heterochrony. D. a change in spatial pattern of gene expression. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about heterochrony? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Transposons are frequently used as cloning vectors.
Answer the following statement true (T) or false (F)
The elbow and knee are examples of ________ joints.
A. cartilaginous B. ball-and-socket C. fibrous D. synovial E. immovable
Which phenotype(s) is/are commonly used to select for growth of Staphylococcus?
a. acid tolerance b. halotolerance c. psychrotolerance d. all of the above