NAME SECTION Fly Transposon Lab (1.4 pt ,we set up a cross for you in which we m

Question

NAME SECTION Fly Transposon Lab (1.4 pt ,we set up a cross for you in which we mated MAE-UAS fem ales to 2-3 males. 112.31 yw P[MAE-UAS. y' Ki P/A2-3 a. (0.5 pts) Which phenotypes and (circle all that apply)? logical features will be present in the male progeny of this cross wi (a) long bristles (b) short, bent bristles (c) red eyes (d) white eyes (e) gray body color ( yellow body color (g) sex combs (h) pointed abdomen (i) ovipositor 0) pigmented external genitalia b. (0.2 pts) In the progeny from this cross, which of the markers (alleles) exhibit a dominant phenotype? c. (0.2 pts) Why is transposition of P[42-3] to the X chromosome unlikely? d. (0.3 pts) What is the main goal of the cross to be set up on week 3? In your answer, state which one phenotypic marker is most important in ascertaining if the goal has been achieved. Fly Lab is a type of mutagenesis screen. What are we screening for (focus on what you d. (0.2 pts) The will see on week 9)?

Explanation / Answer

Answer D: According to the diagrammatic data, it can be clearly seen that the cross is made between a heterozygous parent and a homozygous recessive parent. This type of cross is made to understand two main things:

Here, it can be seen that the pattern of inheritance is studied on the basis of inheritance between two genes to understand whether these genes are linked or not. Thus, it is highly expected from the study that the genes might be linked and the objective of the screening is to count the progeny belonging to either of the parental classes. Thus, it can be clearly understood that a large number of progeny with parental phenotype is expected after 9 weeks of growth.

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