A fruit fly of genotype a+/a . b+/b (parent 1) is crossed to another fruit fly of genotype a/a . b/b (parent 2). The progeny of this cross were: Genotype / Number of individuals a+/a . b+/b / 15 a/a . b/b / 12 a+/a . b/b / 34 a/a . b+/b / 39 The original arrangement of alleles in parent 1 would have been what?

The endoplasmic reticulum (er) is an organelle in some cells. in these cells, it is continuous with the nuclear membrane and forms a large part of the cell\'s total membrane. sort the phrases below as describing rough er, smooth er, both, or neither. note: if you answer any part of this question incorrectly, a single red x will appear indicating that one or more of the phrases are sorted incorrectly.1) found in prokaryites and uekaryotys2) involved in protein synthesis3) involve in lipid synthesis4) contains molecular chaperones in lumen5) bound with ribosomes6) involved in toxin or drug metabolism7) large systemot internnected tubules,vesicles, and sacs8) "packages" enzymes in vesicles for secretion.

Rue or false siblings look simila rbecause they each have some traits of their parents.

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called