The experimental design to determine the adverse effect of a new pesticide launched in the market on egg production and fertilization in frogs. Introduction: The chemical contamination of soil and water may acts as a major factor in amphibian population decline. The effects of organic and inorganic chemical contamination on amphibians like frogs may also depend on other biotic and abiotic variables at the time of exposure like UV-radiation. The pesticide endosulfan is an organochlorine cyclodiene which is extensively used in the world. The oxidation product, endosulphan sulphate is frequently transported into riverine environments. Frog embryos and larvae generally develop under the heterogeneous environments, and the concentration of different chemicals affects the various life cycle stages.

Question

19. On the diagram below a. Label the three pictures as: DNA; polypeptide; or RNA. b. Label the arrows as: translation or transcription/RNA processing. c. Add the following details to the diagram. Promoter region TATA box Transcription start site Transcription terminator Intron (A,B,C,D) Exons (1,2,3,4,5) Splice sites 5' cap 5' UTR (untranslated region) 3' poly A tail 3' UTR (untranslated region) Translational start (AUG) Translational stop (UGA, UAG, or UAA) N and C ends of polypeptide 0000

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Chapter 11, Problem 14TYK

Summary Introduction

To review:

The experimental design to determine the adverse effect of a new pesticide launched in the market on egg production and fertilization in frogs.

Introduction:

The chemical contamination of soil and water may acts as a major factor in amphibian population decline. The effects of organic and inorganic chemical contamination on amphibians like frogs may also depend on other biotic and abiotic variables at the time of exposure like UV-radiation. The pesticide endosulfan is an organochlorine cyclodiene which is extensively used in the world. The oxidation product, endosulphan sulphate is frequently transported into riverine environments. Frog embryos and larvae generally develop under the heterogeneous environments, and the concentration of different chemicals affects the various life cycle stages.

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