During breeding season, female northern elephant seals pick areas of the beach that are relatively protected and remain out of tidal changes. These are some of the "best" places to have their young
These areas are also where they will mate before going back out into the
sea to forage for the next eight months. How does this choice reflect sexual selection?
A. Pups born on these beaches are more
likely to survive to reproduce.
B. Females found on these beaches are more
likely to have offspring that will survive to
reproduce.
C. These areas on the beach are more likely
to be defended by larger and stronger males.
D. These areas on the beach are where
closely related females will have their
offspring.
C
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A. amino acids. B. fatty acids and glycerol. C. nucleotides. D. monosaccharides.
Which of the following organisms is (are)
being used routinely in genetic engineering for production of drugs? I. rats II. yeasts III. bacteria
a. I and II b. I and III c. II and III d. I, II, and III e. III only
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
Three different metabolic pathways are responsible for the production of ATP. What are they?
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