True or false: Oils are triacylglycerols with a high level of unsaturated fatty acids
A. true B. false
Answer: B
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There is a population of beetles that typically have black wings. A scientist studying these beetles knows that their eggs hatch in early spring, the young insects grow through the late spring and summer, they lay eggs in the early fall and they die in the early winter. Recently some beetles have been born with white wings. Early in life, the black- and white-winged beetles seem to be very similar in number of mating events, eggs laid, and survival rates, but shortly after laying their eggs the white beetles die and there are only black-winged beetles during the late fall. Which of the following is a true statement about the beetles?
A) White- and black-winged beetles have equal fitness. B) Black-winged beetles have a higher fitness than white-winged beetles. C) The number of baby white-winged beetles will decrease in frequency over time. D) White wings are an adaptation.
Nuclear envelopes reform during _____
a. prophase b. telophase c. interphase d. anaphase e. metaphase
You are studying two populations of a certain species of frog in two ponds five kilometers apart. There are no other ponds in the area. In pond A all the frogs are small and have a few black spots on them. In pond B most of the frogs are large and lack spots but a few are small without spots and a few are large with spots. Because of the differences in these two populations
A. the distance between ponds is probably a barrier. B. there is probably little interbreeding between the two populations. C. the population in pond A could have gone through a genetic bottleneck. D. All of the choices could be correct.
The comparison of embryos across species reveals the conservative nature of the genes responsible for ____.
A. food procurement B. reproductive behavior C. embryonic development D. embryonic size E. embryonic intelligence