3. Genetic screens Geneticists use the F3 screen (see below) to isolate and characterize new mutations...

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?

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gladiator answered 4 months ago

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