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The parental cross in Drosophila is a mutant male fly (b/b . B/B) with a virgin wild-type female (+/+ . +/+) What are the expected phenotypic ratios for each sex AND the overall population of the F2 generation? There may not be 4 phenotypes for each group.
A line of mouse cells is growing for many generations in a medium with 15N. cells in G1 are then switched to a new medium that contains 14N.
An enzyme and its substrate are combined in a test tube but no product is formed. Another molecule is added to the tube, and now the product is formed at the normal rate. Give 2 reasons.what type of inhibition is working on the substrate.
Two solutions of sodium acetate are prepared, one having a concentration of 0.1 M and the other having a concentration of 0.01 M. Calculate the pH values when the following concentrations of HCl have been added to each of these solutions: 0.0025M,..
Assume i f you are performing in-situ hybridization to detect mRNA, why do you use the antisense strand? Are you using RNA or DNA as a probe for mRNA?
What is meant when it is said that a particular cell has "committed" to myogenesis, the formation of skeletal muscle?
You start to have a scratchy feeling in the back of your throat. After a few days it hurts to swallow, so you go to doctor. The doctor tells you that you have strep throat.
Batesian mimicry is a process wherein: a. Non-toxic organisms evolve the appearance of toxic counterparts to avoid predation b. An organism evolves the appearance of natural color and texture gradients in the environment to avoid predation c. Orga..
Many groups are using modified RNA with 2'-deoxy-2'-fluoro substitutions for riboses (i.e. a 2'-fluorine instead of a 2'-OH) to prevent RNA cleavage by ribonucleases.
In what two different ways do bacteria "sense" the amount of trp in the environment? Describe both mechanisms in detail. What are two hypotheses for the role of RNA silencing.
Discuss how do use the factor-label method to calculate the number of grams of KMnO4 that you would need to make 100 ml of a 0.0045 M potassium permanganate solution?
Barry Snowden, owner of Barry's Snowboards, would like to develop a page that would explain a list of snowboard types along with their descriptions.
The human body produces a variety of immunoglobulins. Explain why does the body need so many different classes and subclasses of these immunoglobulins?
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