Ascientist modified the structure of a promoter region of a gene. what could be its effect on transcription and translation?
a. rna polymerase no longer binds to the dna, so dna will be directly translated into protein.
b. rna polymerase will now bind to the coding region of the gene and carry out transcription.
c. rna polymerase may not be able to bind to the dna, so transcription will not occur

4.06 hc)a five-year review of threats to the southern resident orca population of the united states concluded that the top threats were prey availability, contaminants, and effects from recreational and whale watching vessels. further down the list are oil spills, disease, and effects from commercial vessels not targeting whales. how might this list be different if it were for transient whale populations, which have a larger average population size and live farther offshore in open waters? a)the transient population is more likely to be affected by contaminants. b)the transient population is less likely to be affected by whale watching vessels. c)the transient population is more likely to be affected by disease. d)the transient population is less likely to be affected by prey availability.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.