The evolution of similar forms in different lineages when exposed to the same selective pressures is
A. also known as natural selection.
B. called divergence.
C. referred to as descent.
D. referred to as successive homologies.
E. called convergence.
Answer: E
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Which element would the element lithium most likely form an ionic bond with?
a. Aluminum; atomic number = 13 b. Chlorine; atomic number = 17 c. Magnesium; atomic number = 12 d. Nitrogen; atomic number = 7 e. Silicon; atomic number = 14
A cross between two purple flowers that are heterozygous for their traits is an example of a ________
a. monohybrid cross b. dihybrid cross c. Punnett square d. test cross e. None of these choices.
An organism that can eviscerate its internal organs when stressed is the:
a. sea star. b. sea cucumber. c. crinoid. d. sea urchin. e. brittle star.
What part of the DNA replication process would be most directly affected if a strain of bacteria lacking primase were used to make the cell extracts?
(a) initiation of DNA synthesis (b) Okazaki fragment synthesis (c) leading-strand elongation (d) lagging-strand completion