Although the researcher estimated fitness by survival, he could have also used another proxy for fitness, such as mating success.
a. true
b. false
Answer: a. true
(Both survival and reproduction are common proxies of fitness used to quantify phenotypic selection.)
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Answer the following statements true (T) or false (F)
1. This diagram shows the chloroplast, in which aerobic respiration takes place.
2. Because clindamycin and similar antibiotics bind to bacterial ribosomes, they work by inhibiting translation in the bacterial cells.
3. There are only two main types of RNA, tRNA and rRNA, needed to make proteins.
4. Transcription is the process by which cells use the information of RNA molecules to make proteins.
5. Transfer RNA delivers amino acids to the ribosome during protein synthesis.
Most traits are influenced by only one locus
Indicate whether the statement is true or false
In an aqueous environment, how are the phospholipids of a membrane arranged?
a. in a single layer b. in a bilayer, with the fatty acid tails located at the surface c. in a bilayer, but the phospholipids have no specific orientation d. in a bilayer, with the polar heads of each layer located at the surface
The main form(s) of nitrogen taken up by plant roots and useful to plants is/are
A. N-N. B. nitrite and nitrate. C. nitrate and ammonia. D. nitrite. E. ammonia and N-N.