Proteins are assembled at ribosomes using mRNA as a template. Which property of tRNA allows it to assist in this process? A. Each of many tRNA molecules contains an anticodon, and it may bind to any amino acid.
B. Each of many tRNA molecules contains an anticodon, and it binds to a specific amino acid.
C. One tRNA molecule contains all of the anticodons and binds to all of the amino acids that are specific for the protein.
D. One tRNA molecule contains all of the codons and binds to all of the nucleotides that are specific for the protein.

Photosynthesis converts solar energy into what type of energy?

Lactic acid and energy are produced in muscle cells during choose 1 aerobic respiration cellular respiration anaerobic respiration cellular division

To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)—two within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.