In any population there will be variations of certain characteristics. for example, in the giraffe population there is a variation in neck lengths among individuals. some have longer necks and some have shorter necks. giraffes with a longer neck variations would be more likely to survive than shorter-necked giraffes in which of these situations? a) loggers come in a chop down all of the trees b) insects can only eat the highest leaves due to the canopy c) a plant disease infects the trees, resulting in total leaf death. d) monkeys swarm in and tear off all of the lower leaves to use for shelters

One of the newest applications of cell technology is called cybrid embryos. this process involves replacing the nuclear material of an animal cell with human nuclear material. how might this process affect public policies about research by using stem cells? the same policies and concerns about the use of human embryonic stem cells would most likely apply. the embryos would most likely be treated like traditional animal embryos and regulated accordingly. the process of forming cybrid embryos would most likely be banned by government regulators. the embryos would be treated as regular cells because they are not fully human in origin.