In mice, single-gene mutations lead to obesity. The Ob gene codes for the protein leptin, a satiety factor that signals the brain when enough food has been consumed. The recessive ob- allele is a loss-of-function allele, so ob-/ob- mice do not secrete leptin into veins and capillaries; they do not experience satiety and therefore become obese. Leptin is...

Which best compares habitat and niche? o niche is a place in which organisms live, and habitat is the way in which an organism fits into its habitat.o habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat.habitat is a group of organisms that live in an area, and niche is a specific species that lives in that areao niche is a group of organisms that live in an area, and habitat is a specific species that lives in that area.

Which of the following describes the difference in stimuli required to detect a difference between the stimuli? a. just noticeableb. signal detectionc. subliminald. top down

Which step is not included in the step approach to calculating the greatest common divisor?