The experiment that could be performed to identify the genes that encode the olfactory receptor components in fruit fly, keeping in mind that the fruit flies are subjected to frequent mutations. Introduction: The vertebrates have odor receptors, which are located in the nose. In simple organisms, like fruit flies, the maxillary pulp and antennae act as odor receptors. The fruit flies ( Drosophila melanogaster ) use their antennae to detect pheromones from other fruit flies that help them in mating. The odor receptors are made from different types of proteins that got evolved during the course of evolution.

Question

Which of the following is NOT true about the specification of the eye field? (Check all that apply) A ET induces RX, which in turn induces Otx2 and Pax6. B During late gastrulation, the forebrain and hindbrain are specified. Pax6 initiates the expression of a network of transcription factors, some of which mutually activate one another. D ET induces RX, which in turn induces Pax6 and blocks Otx2 within the eye field. ET induces RX, which in turn blocks Otx2 and Pax6. F During early gastrulation, Noggin promotes the expression of both ET and Otx2. During late gastrulation, Otx2 blocks the inhibition of ET by Noggin. H) It starts with neural induction when the neural plate is induced within the ectoderm. Pax6 is only required for the specification of the retina. During early gastrulation, Noggin indices Otx2 but blocks ET. E Feedback That's not correct

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Chapter 41, Problem 14TYK

Summary Introduction

To review:

The experiment that could be performed to identify the genes that encode the olfactory receptor components in fruit fly, keeping in mind that the fruit flies are subjected to frequent mutations.

Introduction:

The vertebrates have odor receptors, which are located in the nose. In simple organisms, like fruit flies, the maxillary pulp and antennae act as odor receptors. The fruit flies (Drosophila melanogaster) use their antennae to detect pheromones from other fruit flies that help them in mating. The odor receptors are made from different types of proteins that got evolved during the course of evolution.

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Which of the following is NOT true about the specification of the eye field? (Check all that apply) A ET induces RX, which in turn induces Otx2 and Pax6. B During late gastrulation, the forebrain and hindbrain are specified. Pax6 initiates the expression of a network of transcription factors, some of which mutually activate one another. D ET induces RX, which in turn induces Pax6 and blocks Otx2 within the eye field. ET induces RX, which in turn blocks Otx2 and Pax6. F During early gastrulation, Noggin promotes the expression of both ET and Otx2. During late gastrulation, Otx2 blocks the inhibition of ET by Noggin. H) It starts with neural induction when the neural plate is induced within the ectoderm. Pax6 is only required for the specification of the retina. During early gastrulation, Noggin indices Otx2 but blocks ET. E Feedback That's not correct

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