Cdks bind to cyclin and are activated by
a. phosphorylation by Wee1.
b. dephosphorylation by Cdc25 protein phosphatase.
c. the binding of Ink4.
d. the binding of Cip.
Ans: a. phosphorylation by Wee1.
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A patient received bone marrow modified by an adeno-associated virus (AAV) carrying a human gene that encodes an enzyme her body could not make. This is an example of
A) protein therapy. B) germline gene therapy. C) somatic gene therapy. D) retroviral gene therapy.
Compare and contrast the advantages and disadvantages of gas exchange in terrestrial and aquatic environments. What will be an ideal response?
The figure below shows the relationship between beak depth in the medium ground finch on Daphne Major and relative fitness. Assuming that beak depth is heritable, what do you predict about beak depth in the next generation?
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A. Mean beak depth will increase. B. Mean beak depth will stay about the same. C. Mean beak depth in the next generation cannot be predicted using this data. D. Mean beak depth will decrease.
How many sex chromosomes does the normal human male inherit from his father?
A) 0 B) 1 C) 2 D) 22 E) 23