You are most likely to observe coprophagy in _____
A) carnivores
B) herbivores
C) fluid feeders
D) suspension feeders
B
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Trisomy 21, or Down syndrome, occurs when there is a normal diploid chromosomal complement but one (extra) chromosome 21. Although fertility is reduced in both sexes, females have higher fertility rates than males. Van Dyke et al
(1995; Down Syndrome Research and Practice 3[2]:65—69 ) summarize data involving children born of Down syndrome individuals. Assume that children are born to a female with Down syndrome and a normal 46-chromosome male. What proportion of the offspring would be expected to have Down syndrome? A) Two-thirds of the offspring would be expected to have Down syndrome. B) One-third of the offspring would be expected to have Down syndrome. C) All the children would be expected to have Down syndrome. D) None of the offspring would be expected to have Down syndrome. E) One-half of the offspring would be expected to have Down syndrome.
The first animals to show cephalization have several characteristics. Which of the following is NOT one of them?
a. These animals were triploblastic. b. These animals had a proboscis. c. These animals were in phylum Platyhelminthes. d. These animals are placed in the group Lophotrochozoa. e. These animals followed the protostome pattern of embryonic development
Viruses that infect and lyse cancer cells are called
a) oncogenic viruses. b) latent viruses. c) oncolytic viruses. d) lysogenic viruses.
Which of the following is most similar between the cell cycle process of Sulfolobus and that of bacteria?
A. The segregation of the chromosomes B. The timing of events during G1, S, and G2 C. The cytokinesis process