Suppose a geneticist mutates the gene for the poly(a) tail-binding protein (pabp) in an eukaryotic cell line. the resulting mutant protein cannot bind to poly(a) tails. what is the effect of the pabp mutation in the cultured cells? a-transcription will not occur in the cultured cells, because pabp is an essential transcription factor. b-translation will not occur in the cultured cells, because mrnas will be degraded at a greater rate than normal. c-transcription will occur in the cultured cells, but the resulting transcript will be longer than normal. d-translation will occur in the cultured cells, but the resulting polypeptide will be longer than normal. e-replication will not occur in the cultured cells, because pabp determines the location of the origin of replication.

Which of the following is true of photosynthesis? a)carbon dioxide is a reactant b)water is a product c)most reactions within this process are exothermic d)oxygen is a reactant

The collared lizard is a species found in the desert southwest. male collared lizards show considerable color variation, ranging from brightly colored to a very dull pattern. your goal is to determine the function, if any, of male color patterns in collared lizards, using the scientific method. your tentative explanation is that male color plays a role in attracting females for mating purposes. you predict that females will preferentially choose brightly colored males over dull-colored ones. to test this prediction, you observed the interactions of female collared lizards with their male counterparts. you selected males that were the same age and size, and that differed only in their coloration pattern. you placed equal numbers of the two types of male lizards, bright and dull, in aquariums, along with one female lizard per aquarium. out of 350 aquariums observed, the female chose to mate with the brightly colored male 277 times, and the dull-colored male 70 times. in 3 instances, the females did not mate with either type. create a bar graph of your data, plotting the type of male (dull or brightly colored) on the x-axis. on the y-axis, plot the frequency with which each type of male was chosen by females. using this graph, answer the following question(s). is it reasonable to conclude (i.e., is it supported by the data) that female collared lizards prefer more brightly colored male lizards over dull-colored males?

~~16. while watching a special on animals, brianna discovers that hares tend to lose heat through their ears. based on this and what is known about surface-to-volume ratios, propose an explanation as to why hares that live in hot climates (such as the desert) have large, extended ears