(PLEASE HAS TO BE CORRECT!) Which of the following mechanisms is used to coordinate the expression of multiple, related genes in eukaryotic cells? A) A specific combination of control elements in each gene's enhancer coordinates the simultaneous activation of the genes.
B) The genes share a single common enhancer, which allows appropriate activators to turn on their transcription at the same time.

Plz ! for many generations farmers in north america have been choosing to cross corn plants with large ears of corn each year this results in the new generation of plants also growing large ears of corn. what is the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.