Seven trp- mutants are isolated. All 7 mutants are crossed to see if their progeny grow ( ) or do not grow (-). Based on the results, determine how many genes you have identified, and which mutants are in which gene (genes can be represented with a line and numbers over the line indicate which mutations lie on that gene).

In what part of the body does the most muscle activity happen?

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.

There are multiple lines of evidence that provide support for common ancestry and evolution. write 3-4 paragraphs describing at least three of them in detail. provide at least one example for each line of evidence.