All of the following animals give birth to live young
after extensive internal development in the female
EXCEPT
a. humans.
b. mice.
c. kangaroos.
d. monkeys.
e. lions.
Answer: c
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placement of the phylum Platyhelminthes in the phylogenetic tree differs between a morphologically based phylogeny and a molecular based phylogeny. Which of the following statements best describes the interpretation based on molecular phylogeny?
A. Modern Platyhelminthes do not have a coelom but did originate from an ancestor that had one. B. The Platyhelminthes clade separated from other clades before coeloms evolved and consequently Platyhelminthes have never had a coelom. C. Platyhelminthes originated from ancestors with a coelom and have retained it to the present time. D. Platyhelminthes evolved from an ancestor without a coelom but developed one during the course of their evolution. E. Some Platyhelminthes have a coelom but others do not and it is difficult to conclude anything about its evolution within the clade.
A microorganism that has an optimum growth temperature of 37°C, but can survive short exposure to high temperatures is called a(n) ________.
A. thermophile B. thermoduric microbe C. facultative psychrophile D. extremophile E. psychrophile
The ABO blood group in humans is an example of __________ producing four phenotypes.
A. polygenic inheritance B. multiple alleles C. people with genetic disorders D. pleiotropy
Which of the following statements concerning genital warts is FALSE?
A. They can be transmitted via fomites. B. They can travel to different locations on the same individual by autoinoculation. C. They can be sexually transmitted. D. The virus may remain latent and cause lesions at a later time. E. The incidence is relatively low because treatment is available.