Lactose a sugar found in milk products is broken down by enzymes. the making of these enzymes is controlled by a genetic system in e. coli. when there is no lactose present in the body, the repressor protein blocks rna polymerase from binding to the promoter, making impossible. transcription translation replication

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.