Which is the best answer regarding evolutionary theory and promoters? Conserved

Question

Which is the best answer regarding evolutionary theory and promoters?                             

                                Conserved regions of promoters are likely to be important for regulation of expression across species

                                Divergent regions of promoters are likely to be important for regulation of expression across species

                                Divergent regions of promoters are likely to be important for regulation of novel traits between two similar species

                                Answers 1 and 2

                                Answers 1 and 3

                                Conserved regions of promoters are likely to be important for regulation of expression across species

                                Divergent regions of promoters are likely to be important for regulation of expression across species

                                Divergent regions of promoters are likely to be important for regulation of novel traits between two similar species

                                Answers 1 and 2

                                Answers 1 and 3

Explanation / Answer

1 and 3

protein coding sequences are not the only important pieces of information in the genome, but also considered as the evolution and conservation of the promoter sequences which regulate the expression of those genes.

While divergent regions due to difference in the sequence regulate the variability in the species.

ex 16s rRNA sequence: conserved sequence specific to specific genus while variable regions involved in the difference among species.

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