In principle, how many different cell types can an organism having four different types of transcription regulator and thousands of genes create?
(a) up to 4
(b) up to 8
(c) up to 16
(d) thousands
(c) The type of cell is determined by the particular combination of transcription regulators active within it. With four different proteins available, there is one possibility with no proteins at all and one with all four proteins. There are four possibilities with one protein each, six possible combinations of two different proteins, and four possible combinations of three different proteins.
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A. gonorrhea B. syphilis C. trachoma D. non-gonococcal urethritis
Which type of muscle fibers is known as dark meat in chickens? a. White b. Both red and white c. None of these choices
d. Red e. Neither red nor white
The illustration shows a cell in __________ of mitosis
a. anaphase b. metaphase c. interphase d. prophase e. telophase
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A. 16% B. 4% C. 20% D. 32%