The lac operon of E. coli is ________ when the repressor is bound to ________
A) active; lactose
B) inactive; lactose
C) active; tryptophan
D) inactive; tryptophan
Answer: A
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If a combination of two or more genes is required to produce a specific trait, it is called a(n) _______
A. overdominance B. simple mendelian trait C. sex-influenced trait D. sex-linked trait E. gene interaction
Why is morphological convergence not a good explanation for vertebrate forelimbs? What will be an ideal response?
Penicillin is an antibiotic that inhibits enzymes from catalyzing the synthesis of peptidoglycan, so which prokaryotes should be most vulnerable to inhibition by penicillin?
a) gram-positive bacteria b) archaea c) mycoplasmas d) gram-negative bacteria e) endospore-bearing bacteria
A society:
A) is a network of human relations that includes ideas, institutions, and material things. B) refers to structures and processes that authoritatively make and apply rules. C) refers to a broad term encompassing a range of actions and institutions. D) is a basic way of seeing the BGS relationship.