Which adaptation is constrained by the particular ancestral structure of the organism, resulting in a jury-rigged design?
A) antibiotic resistance in bacteria
B) anatomy that allows upright posture in humans
C) the wings of bats
D) ethanol tolerance in fruit flies
B
Biology & Microbiology
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In recombinant DNA techniques, the gaps in the paired DNA fragments are closed by ____
a. restriction enzymes b. DNA ligase c. DNA polymerase d. DNA replicase e. reverse transcriptase
Biology & Microbiology
The plant hormone that inhibits seed germination is:
a. abscisic acid b. auxin c. gibberellin d. ethylene e. systemin
Biology & Microbiology
Could two phenotypically normal parents have a child with Tay-Sachs Disease?
a. Yes b. No
Biology & Microbiology
Phospholipase C catalyzes the reaction in which:a
IP3 is converted to DAG. b. PIP2 is split. c. a protein kinase is activated. d. calcium ions are released from the ER. e. DAG is converted to PIP2.
Biology & Microbiology