When is a pharmaceutical company more likely to spend $100 million to research a new drug:  when it knows it will be able to charge different prices for the drug in different countries or when it knows that it will be required to charge the same price in all countries? Please be sure to explain your reasoning.

This is a multipart problem. Answer each part (A-C) in the individual spaces provided.   During the lab, paper chromatography was used to separate plant pigments. The results are shown below. (A.) (2 points) Which pigment has the greatest affinity for the paper, A, B, C, or D? Type only a capital letter for the pigment in the space provided.   Answer for Part A:   (B.) (2 points) Calculate the Rf value for the pigment labeled C. Round answer to 2 decimal places.   Answer for Part B:   (C.) (2 points) If another pigment, other than the ones present in this experiment, was present and had an Rf value of 0.56, where would this pigment be located on the chromatography paper relative to the others? Type only one capital letter that identifies the specific pigments in each space.   Answers for Part C: This other pigment would be located between Pigment and Pigment . 

(2 points) Name one of any of the structures seen in the photomicrograph of a section of a testis below.   Answer:  

(1 point) If a nucleus has 10 chromosomes when it begins meiosis, how many chromosomes does each daughter nucleus have after Telophase I and Telophase II, respectively?

(1 point) What stage of meiosis is represented in the diagram below?

(1 point) During photosynthesis, what molecule is split to produce oxygen gas, and when does this occur?

(2 points) What stage of mitosis is represented in this animal cell?   Answer:  

In an insect population, 25% (decimal proportion = 0.25) of individuals are found to express the recessive phenotype of white wings while the remainder of the population expresses the dominant phenotype of brown wings. What is the frequency of heterozygotes in the population?

What Volvocine genus is represented in this image?

(1 point) In which phase of mitosis does the nuclear membrane begin to form around two new nuclei and chromosomes begin to decondense?