PLease answer 4 and 5 and please provide explanation with question 5 .Rec7-probl

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PLease answer 4 and 5 and please provide explanation with question 5

.Rec7-problems for midtenn2 review.pdf. Adobe Acrobat Reader DC File Edit View Window Help Home Tools Rec7 - problems fo... * Sign In 125% 4. Describe where along the D/V axis the twist mRNA will be expressed (if at all expressed) in the embryos produced by females of the following genotypes (GOF = gain of function: all mutants are homozygous) (4 pts) Mother genotypes Wild-type Tol spatzle-/. Double mutant elle-/-; cactus-/- twist mRNA expression pattern 5. True or false? Boundaries between compartments that are initially set up in an early Drosophila embryo eventually get destroyed during the metamorphosis, so that an adult fly has to generate new compartment boundaries. Briefly_explain (2pt) 12:41 PM O Type here to search 2/21/2018 2

Explanation / Answer

4. In the wild type, the twish mRNA will be found in the ventral region.

5. False. Boundaries beween compartments are not destroyed during metamorphosis. This is due to the fact that the boundaries help in the localization and separation of cells,i.e,they prevent the mixing of cells and house cells that encode factors such as hedhehog,etc. If the boundaries were to be destroyed, the conditions wouldn't be maintained properly during metamorphosis.

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