For each of the following situations, determine whether the…
For each of the following situations, determine whether the resulting Drosophila embryo would have a dorsalized or ventralized phenotype (Dorsal pathway diagram for reference). A. Gain-of-function mutation in the Toll receptor (it is constitutively active). B. Loss-of-function mutation in Cactus. C. Gain-of-function mutation in Cactus (it cannot be degraded) D. Misexpression of Pipe on both sides of the embryo (it is normally only expressed in ventral follicle cells). E. Loss-of-function mutation in Dorsal
Read Detailseven-skipped (eve) is expressed in 7 stripes across the Dros…
even-skipped (eve) is expressed in 7 stripes across the Drosophila embryo. Stripe 3 and 7 are controlled by a common regulatory module that contains multiple enhancers and silencers. As shown below, Knirps (Kni) and Hunchback (Hb) are repressors, and Mrl and Zelda are activators of eve stripe 3 and 7. Mrl and Zelda are expressed throughout the entire embryo; the locations of Hb and Kni are indicated in blue and green respectively on the diagram below. Which of the mages below represents what would happen to eve stripe 3 and 7 expression in a knirps mutant (loss of function) embryo? Stripe 2 is shown for reference. i
Read DetailsSox proteins are transcription factors, so one hypothesis to…
Sox proteins are transcription factors, so one hypothesis to explain the different morphologies of mouse and chick lung would be that Sox9 is activating expression of a gene in chick lung that results in fusion of the bronchial tips. Imagine you have identified a gene – let’s call it Fuse1 – that you think is the molecule responsible for tip fusion in chick. Design a show it experiment to test your hypothesis that Fuse1 is the molecule responsible for bronchial tip fusion in developing chick lungs. Describe a result that is consistent with your hypothesis, and one that is inconsistent with your hypothesis
Read DetailsSox proteins are transcription factors, so one hypothesis to…
Sox proteins are transcription factors, so one hypothesis to explain the different morphologies of mouse and chick lung would be that Sox9 is activating expression of a gene in chick lung that results in fusion of the bronchial tips. Imagine you have identified a gene – let’s call it Fuse1 – that you think is the molecule responsible for tip fusion in chick. Design a move it experiment to test your hypothesis that Fuse1 is the molecule responsible for bronchial tip fusion in developing chick lungs. Describe a result that is consistent with your hypothesis, and one that is inconsistent with your hypothesis.
Read DetailsState whether the following questions are “true” or “false.”…
State whether the following questions are “true” or “false.” You must explain your reasoning to receive full credit. Please record your answer by typing the letter that corresponds to the part you are answering. For example, if you are answering part A, type “A) your answer.” A. The Federal Reserve System is the primary federal regulator for First National Bank of Gadsden, a nationally chartered bank.
Read DetailsState whether the following questions are “true” or “false.”…
State whether the following questions are “true” or “false.” You must explain your reasoning to receive full credit. Please record your answer by typing the letter that corresponds to the part you are answering. For example, if you are answering part A, type “A) your answer.” D. Only banks with a national charter can join the Federal Reserve System.
Read Details