Directions: Answers must be in essay form. Outline form is not acceptable. Labeled diagrams may be used to supplement discussion, but in no case will a diagram alone suffice. It is important that you read each question completely before you begin. 5 points. Read: A major distinction between prokaryotes and eukaryotes is the presence of membrane-bound organelles in eukaryotes. Prokaryotic and eukaryotic cells have some non-membrane-bound components in common. Describe the function of TWO of the following: DNA. Cell wall, Ribosomes and discuss how each differs in prokaryotes and eukaryotes.

In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Acell in the human nervous system whose primary function is to form myelin and the blood-brain barrier, respond to injury, remove debris, and enhance learning and memory is called a(n) cell.