The core of every virus particle always contains
A) DNA and RNA
B) Enzymes
C) DNA
D) Either DNA or RNA
E) Capsomers
D) Either DNA or RNA
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Body weight must be a multifactorial trait because
A) it is obviously inherited. B) it responds to lifestyle changes. C) it is within a certain range. D) it is inherited to an extent, but can be altered by diet and/or exercise.
Which theory was helpful to Darwin in the formulation of his theory of evolution?
a. catastrophism b. inheritance of acquired characteristics c. uniformitarianism d. continental drift e. special creationism
Which of the following best describes semiconservative replication?
a. The translation of a DNA molecule into a complementary strand of RNA. b. A DNA molecule consists of one parental strand and one new strand. c. The number of DNA molecules is doubled with every other replication. d. The replication of DNA never takes place with 100% accuracy. e. The replication of DNA takes place at a defined period in the cell cycle.
he sympatric speciation of Hawthorn and apple maggot flies:a
has occurred in part because the adult flies emerge at different times of the season. b. has been linked to allopolyploidy. c. has occurred as a result of mutation and speciation within the host species. d. has resulted in subtle but distinctive changes in the physical appearance of the two flies. e. has occurred because of a geographic barrier