Which of these is evidence that eukaryotic genes are regulated independently instead of in units like operons? Genes use a common promoter and a common set of transcription factors.

Each gene has its own promoter, but they use a common set of transcription factors.

Each gene has its own promoters and set of transcription factors.

Genes use a common promoter, but each has its own set of transcription factors.

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.