Through gene expression, the messages encoded in the dna contained in a cell direct the cell’s activity. which of the following sentences best defines gene expression? a. gene expression is the correspondence between nucleotide triplets in dna and the amino acids in proteins. b. gene expression is the activation of a gene that results in the formation of a protein. c. gene expression is the genotype of an organism. d. gene expression is the process by which dna is replicated and transcribed.

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey