Under what conditions might the morphological species concept be used instead of the biological species concept?

a. it is clear that one species evolved into another, based on fossils.
b. all members of one population can successfully interbreed with another population.
c. the fossils of the species are similar, but evidence for reproductive isolation between them is unclear.
d. two closely related species can hybridize but the offspring are sterile.
e. a particular "species" is sexually reproducing.

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.

Strands of genetic material floating in the nucleus are referred to as

Which type of pollution occurs when small particles of soil are suspended in water? a. radiological pollution b. chemical pollution c. physical pollution d. thermal pollution apex