How Do Genetic Mosaics Help Determine the Focus of Action

question 9

Multiple Choice

How do genetic mosaics help determine the focus of action of a gene?

• A)Mosaics ae composed of cells with different genotypes so some genes may be active in some cells and not others.
• B)Mosaics are created by mating flies are homozygous recessive for two different genes and the effects of the double miutations on the morphololgy of the progeny are studied.
• C)Mosaics are created by mating two flies that carry homozygous gain-of-function muttions in different genes and the effects of the mutations on the morphology studied.
• D)Mosaics are created by the Cre-loc system which allows for the deletion of specific genes at controlled stages of development.

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