Which one below is not a strand of rna

a. aagucagcuugcaaccg
b. atgcttgcagtccatgac
c. ccgcauugccaugcagu

What must happen before meiosis can begin? a. four gametes must be produced b. the four tetrads must be pulled apart c. dna doubles and produces sister chromatids d. the cell membrane pinches together

What is the following best defines climate?

Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass