Certain ________ have RNA for their genetic material
A) bacteria
B) viruses
C) plants
D) eukaryotes
E) prokaryotes
B
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A nucleic acid contains thymine, allowing you to conclude that:
A. this nucleic acid is DNA. B. this nucleic acid is RNA. C. this nucleic acid could be either DNA or RNA.
The Irish elk was misnamed because it was neither exclusively Irish, nor was it an elk. The
Irish elk is a giant extinct deer, the largest deer species ever, which stood up to 7 feet at the shoulder. In sexually mature males, the antlers spanned up to 12 feet and weighed 90 pounds. These large antlers were likely used in displays and ritual combat between males during the mating season. Although females preferred males with large antlers, these structures were also unwieldy and may have lead to decreased survivorship in males. Thus, this trait arose through the process of __________.
a. natural selection b. sexual selection c. mutation d. gene flow
The site of fertilization is labeled
a. 1. b. 2. c. 3. d. 4. e. 5.
Density-independent controls over population
growth include
a. parasites. b. temperature. c. disease. d. competition. e. all of these