The most efficient lungs with respect to oxygen uptake are found in this group of vertebrates.
A. amphibians
B. birds
C. fish
D. mammals
E. reptiles
B. birds
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Which of the following best explains the expectation that asexually reproducing rotifers would have greater sequence differences in the two alleles of a gene than sexually reproducing rotifers?
A. The two alleles of a gene do not recombine in asexual reproduction and thus different mutations accumulate on the two alleles. B. Mutations occur more frequently in asexually reproducing animals than sexually reproducing animals. C. Sexually reproducing organisms evolve more rapidly than asexually reproducing organisms. D. Asexual reproduction increases population sizes more rapidly than sexual reproduction, so more differences accrue. E. All of the answer options are correct.
Discuss the importance of twin and adoption studies to human behavioral genetics research
What will be an ideal response?
A bacterium undergoes four rounds of replication. How many cells would result, and how many of those cells would
still have part of an original DNA strand from the starting bacterium?
What will be an ideal response?In a certain plant, when individuals with blue flowers are crossed with individuals with blue flowers, only blue flowers are produced. Plants with red flowers crossed with plants with red flowers sometimes produce only red flowers, although other times they produce either red or blue flowers. When plants with red flowers are crossed with plants with blue flowers, sometimes only red flowers are produced; other times either red or blue flowers are produced. Which of the following is true?
A. Red is dominant B. Blue is dominant C. Red is recessive D. Red is codominant E. Red is incompletely dominant