Females heterozygous for the recessive second chromosome mutations pn, px, and sp are mated to a male homozygous for all three mutations. The offspring are as follows: px sp cn        1,461 px sp cn+      3,497 px sp+ cn         1 px sp+ cn+     11 px+ sp cn        9 px+ sp cn+     0 px+ sp+ cn     3,482 px+ sp+ cn+   1,539 Total               10,000   Which of three genes is in the middle? 

Describe the role of the rough endoplasmic reticulum (RER) in the endomembrane system.

What is the primary difference between a transmission electron microscope (TEM) and a light microscope?

  Can this molecule be dissolved by water? Explain your answer fully. (Type your answer below)

Which of the following fibers of the cytoskeleton function in moving cells or organelles within cells? Choose all that apply.

Name one type of macromolecule family, name its building block(s) and give an example of the type of macromolecule.

Which type of microscope is best suited for viewing the surface structure of a specimen in 3D?

Give an example of when a dehydration reaction would occur and explain the use of water in that reaction.

What part of a nucleotide is responsible for imparting negative charge to the molecule?

Which of the following structures is present in eukaryotic cells but absent in prokaryotic cells?