Heliobacillus is a genus of flagellated gram-positive Firmicutes bacteria that contain a unique photosynthetic pigment, bacteriochlorophyll g. Despite being photosynthetic, they often ferment pyruvate. They are obligate anaerobes and use nitrogenase enzymes to fix nitrogen. Select the statements that are true for bacteria in the genus Heliobacillus. They are anarobic

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Aheterozygous normal male marries a woman with a sickle cell anemia. give the genotypes and possible phenotypes of the offspring

What is the ecological role of food chains and food webs