Which of these is not an example of coevolution between flowers and pollinating bees?
A. Some flowers are bright red with long tubes to hold nectar.
B. Flowers have ultraviolet markings visible to bees but invisible to most other insects.
C. Bees have tongues to lap up nectar.
D. Bees have strong preferences for particular types of flowers and remember where the plants are located.
E. Some bees are hairy to collect and carry pollen.
Answer: A
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Apples, peaches, cherries, strawberries, and many other fruits all belong to the ____ family
a. grass b. rose c. potato d. euphorb e. pea
Under strictly controlled conditions, a probe can be used that will hybridize only with its complementary sequence and not with other sequences that may vary by as little as one nucleotide. What are such probes called?
A) generation-specific probes B) microsatellites C) allele-specific oligonucleotides (ASOs) D) VNTRs E) short, variable repeats
Why is prokaryotic cell division fundamentally different from eukaryotic cell division?
A) Prokaryotic cells have a single chromosome and no nuclear membrane. B) Prokaryotic cells do not have a plasma membrane. C) Prokaryotes have many more chromosomes to divide. D) Prokaryotic cells divide for several months and then live for decades without dividing.
A marine biologist designs a study to measure net primary productivity in the world's oceans. She travels to the coastal zone of each continent, takes measurements from north, south, east, and west points along the continent, and combines her data into a
global average. Will these measurements be accurate? A) No, because ocean life is greatest near the poles and decreases toward the equator. B) Yes, but only if she is sure to sample different climatic zones carefully, because production in different climatic zones may vary by an order of magnitude. C) Yes, because although production in different climate zones differs, the open ocean is well mixed because of strong ocean circulation patterns. D) No, because ocean productivity is greatest past the intertidal zone. E) No, because the continental edges have much higher productivities than the open ocean.