Conjugation is the direct transfer of dna from one bacterium to another. occurs when a phage transfers bacterial dna from one bacterium to another. requires dna polymerase. is the result of crossing over. occurs when a bacterium acquires dna from the surrounding environment.

What causes darkening of the skin as melanin production increases

Amines amides and amino acids are categories of

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.