Cultures of a bacterial species were incubated out on the incubator shelf, in an anaerobic jar, and in a candle jar. after incubation, there was moderate growth of cultures in the candle and anaerobic jars, but heavy growth of the culture on the incubator shelf. this species is a/
facultative anaerobe? t/f

True

Explanation:

Facultative anaerobes are bacteria who used to grow in the aerobic condition but when oxygen becomes deficient they can switch to anaerobic mode and obtain energy through fermentation. So facultative anaerobe normally lives in aerobic condition but can survive in anaerobic conditions too.

So as facultative anaerobes normally grows in aerobic condition they grow well in incubator shelf but in anaerobic condition like anaerobic jar or in a candle jar they will show moderate growth because it is not the ideal condition for them to grow. Therefore the statement is true.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).