You have a cell line that expresses both the GPCR-X, GPCR-Y, the corresponding G-proteins, and adenylate cyclase. There is a basal level of adenylate cyclase activity that produces a baseline cAMP concentration. Your project is to characterize a series of mutations in these components. Requried:
Will each mutation increase or decrease the intracellular levels of cAMP upon ligand addition (remember, both GPCR-X and GPCR-Y bind to the same ligand)

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.  

the principle of segregation describes how pairs of gene variants are separated into reproductive cells. from his data, mendel formulated the principle of segregation. we now know that the segregation of genes occurs during meiosis in eukaryotes, which is a process that produces reproductive cells called gametes.