Protein factors (IFs, EFs, and eRFs) play critical roles in each of the steps in translation of a message by the ribosome. Which of the following general statements pertaining to their functions and mechanisms of action is/are true?

3. Genetic screens Geneticists use the F3 screen (see below) to isolate and characterize new mutations in a wide variety of animal and plants. Use your knowledge of mutagenesis and Mendelian inheritance to answer the following questions. A. Why is the F3 screen necessary, i.e. why is it that most mutants cannot be identified in the F1 generation? B. Would it work to mate the F1 fish carrying a mutation to one of its mutant siblings? Why or why not? C. A single zebrafish mating produces around one hundred offspring. In practical terms, a geneticist who performs the F3 screen will separate out each individual F1 offspring, and carry its descendants through the F2 and F3 generations independently of the others. Why is this necessary?

C. How do RecA and RecBCD function to promote recombination? D. Endonuclease activity of RecBCD is greater in the 3'-5' strand, rather than the 5'-3' strand. Describe how this affects strand invasion, branch migration and resolution. E. How is recombination initiated during meiosis in eukaryotes? F. What is the connection between nonhomologous end joining repair and canc

Mendels second law is often referred to as the law of independent assortment . create an example to illustrate it and chi-square to verify the results

Explain one way to grow a bacteria that would allow them to develop antibiotic resistance. Then explain one genetic modification you could make to your bacteria to help them develop antibiotic resistance.

explain and demonstrate how a dihybrid test cross can be used to determine if autosomal linkage exists

Need ideas for slides for a power point about egypt that include some of their of non-verbal cues in personal space, attitudes towards time, perception of touch, eye contact/appropriateness of gaze, facial expressions, and hand gestures (if relevant

use the word resistant to explain how hybridization can be useful ?

Describe what you think would happen to a cell that was missing the ligase enzyme and tried to replicate its DNA? Explain what this would mean for replication, and what it would mean for the organism.

Essay 3: Signs of Frailty:

1) First, describe two proven signs or markers of clinical frailty; Then, 2) for each sign, discuss one possible intervention that could help to prevent frailty if detected earlier.

protists are eukaryotic organism and many of them are unicellular. what two membrane bound organelles could a unicellular protist use to eat and what membrane transport mechanism would produce one of the membrane bound organelles used in this eating process? in addition to naming the two membrane bound organelles state the role each of them would be playing in the eating process.

Choose one of the following traits (1) Dominant/recessive OR Codominant OR Incomplete dominance OR Sex-linked (2) choose a trait that fits into that category that was not mentioned in the PPT (3) briefly describe the trait and (4) what is the current percentage of people that have this trait in the US.

Describe each of the following repair mechanisms. Your descriptions should (1) differentiate between the mechanisms, (2) indicate under what circumstances each mechanism is active, (3) make clear the basic steps of each mechanism and (4) identify the key enzymes involved. You might consider creating a diagram or table to assist you with your explanation.

a.   proofreading

b.   mismatch repair

c.   excision repair (focus on nucleotide excision repair)

d.   photoreactivation       

e.   recombinational repair

1. a. Explain what mutations are, what causes them and whether mutations are beneficial or harmful to organisms and why.

b. Define and distinguish between frameshift, missense, nonsense, and silent mutations.

Chapter 6 - Protozoa: Intestinal Flagellates and Ciliates

1. Omneaex The intracellular portion of a flagellum
2. oyctstemo The rudimentary mouth
3. onlioasmoc    An infection that originates in and is acquired from a medical facility
4. muglelalf    Ectoplasm extension that provides locomotion
5. xaytleos The axial rod functioning as a support in flagellates
6. tsrpecy    Differentiated phase in protozoans that lays down the resting cyst
7. casto    A thin, firm, rodlike structure running along the base of the undulating membrane
8. aclii    Multiple hairlike processes attached to a surface of a cell
9. udtnaignlu bamemre A membrane extending out like a fin along the outer edge of the body of certain protozoa

10. oaztiehomporaosg A class of protozoa that use flagella for locomotion