Which term refers to the regulatory events that establish an initial specific pattern of gene activity and developmental fate for a given cell?
A) differentiation
B) lysogen
C) determination
D) gradient regulated
E) attenuation
C
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Stromatolites are
A. layered rocklike structures formed by some cyanobacteria (blue-green algae). B. the earliest known arthropods. C. found only in rocks of Carboniferous age. D. the earliest known arthropods and found only in rocks of Carboniferous age are correct. E. fossilized coral reefs.
Mobile genetic elements that are permanently integrated into a microbial genome are known as ________ ________.
Fill in the blank(s) with the appropriate word(s).
Amino acids are acids because they always process which functional group?
A. amino B. carbonyl C. carboxyl D. phosphate E. hydroxyl
Tumor blood vessels are ____ with an irregular shape.
a. dilated b. stretched c. shaped d. none of the above