The base content of a sample of DNA is as follows: A = 31%, G = 31%, T = 19%, C = 19%. What conclusion can be drawn from this information?
What will be an ideal response?
The sample of DNA is single-stranded.
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How many molecules of ATP are needed to reduce one molecule of carbon dioxide to carbohydrate by oxygenic phototrophs during the dark reactions of photosynthesis?
A. 10-12 B. 2 C. 4 D. 3
An organism that contains patches of tissue that vary for a specific characteristic such as a pigment, can be an example of which of the following?
A. Linkage B. Meiotic recombination C. Mitotic recombination D. Translocations E. None of the answers are correct
The Lygaeus mode of sex determination is the ________
A) scheme based on single translocations in the X chromosome B) XO/YY scheme C) hermaphroditic scheme D) XY/XX scheme E) XX/XO scheme
Which form of speciation is most rapid?
A. Sympatric speciation via polyploidy B. Allopatric speciation on island archipelagos C. Allopatric speciation on the mainland D. Sympatric speciation via disruptive selection E. Sympatric speciation via character displacement