Ais the segment of dna that codes for a trait. (protein)

How are the tortoises that darwin observed on the galápagos islands similar to the anoles that losos studied

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

Is there any solid scientific evidence that humans have been cloned?