What is the function of the general transcription factor TFIID?
A. TFIID recognizes the enhancer.
B. TFIID recognizes the TATA box.
C. TFIID recognizes the silencer.
D. TFIID transcribes mRNA.
E. TFIID is a silencer.
B. TFIID recognizes the TATA box.
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The leading and the lagging strands differ in that _____
A) the leading strand is synthesized in the same direction as the movement of the replication fork, and the lagging strand is synthesized in the opposite direction B) the leading strand is synthesized by adding nucleotides to the end of the growing strand, and the lagging strand is synthesized by adding nucleotides to the end C) the lagging strand is synthesized continuously, whereas the leading strand is synthesized in short fragments that are ultimately stitched together D) the leading strand is synthesized at twice the rate of the lagging strand
Muscle tissues, connective tissues, and the epithelia lining the urinary and reproductive systems arise from
a. mesoderm. b. endoderm. c. ectoderm. d. two of the above.
Select all correct descriptions of the cerebellum.
A dog breeder wishes to develop a breed that does not bark. She starts with a diverse mixture of dogs. Generation after generation, she allows only the quietest dogs to breed. After 30 years of work she has a new breed of dog with interesting traits, but
on average, the dogs still bark at about the same rate as other dog breeds. Which of the following would be a logical explanation for her failure? A) There is a great deal of variation for the trait (barking). B) The tendency to bark is not a heritable trait. C) The selection was artificial, not natural, so it did not produce evolutionary change. D) Quiet dogs have fewer pups than barkers.