Which species is considered to be the most ancient?
A. Homo erectus
B. Australopithecus afarensis
C. Australopithecus sediba
D. Homo sapiens
E. Sahelanthropus tchadensis
Answer: E
Biology & Microbiology
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Which numbered item in the figure above represents a female gametophyte?
a. 1 b. 2 c. 3 d. 4 e. 5
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Adaptations of thermophiles >55°C
What will be an ideal response?
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In a chromosomal inversion a segment of a chromosome is:
a. reversed. b. duplicated. c. lost. d. attached to a nonhomologous chromosome. e. deleted
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Which phylum of worms includes the leeches?
A) Flatworms B) Annelids C) Roundworms D) None of the above
Biology & Microbiology