People homozygous for a specific high-risk allele of thefto gene ____

a. tend to overeat
b. store more fat
c. are naturally heavier
d. are always overweight
e. cannot undergo gastric bypass surgery


ANSWER: a

Biology & Microbiology

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Shannon diversity (Hs)

A. goes up with increases in the number of species sampled and is higher when individuals are more equitably distributed among species. B. is higher when individuals are more equitably distributed among species. C. is independent of abundance. D. increases in areas undergoing secondary succession. E. is higher when individuals are more equitably distributed among species and is independent of abundance.

Biology & Microbiology

Two different species are crossed and the second generation (F2) illustrates reduced fitness. This is an example of

____.

a. behavioral isolation b. gametic isolation c. hybrid breakdown d. crossing over e. hybrid sterility

Biology & Microbiology

Using the genetic code, predict what type of mutation has occurred in the hemoglobin sickle cell anemia allele. Normal allele GGAAUGAAACAGGAACCC Mutant allele GGAAUGAAACAGGUACCC

A. a point mutation, Val to Glu B. a frame shift C. addition of a new stop codon D. a point mutation, Glu to Val

Biology & Microbiology

Which of the following enzymes allows retroviruses to transcribe DNA from ssRNA?

A) protease B) DNA polymerase C) integrase D) reverse transcriptase E) nuclease

Biology & Microbiology