The pattern of Siamese cat’s fur pigmentation due to ‘temperature-sensitive’ mutation in the gene encoding dark fur pigment. Concept introduction : Siamese cats have unique fur pigmentation pattern known as ‘colorpoints’. The pattern includes dark ears, face, legs, and tail, while a creamy white shade is seen on the back and belly. They are partial albinos. This is caused due to a ‘temperature-sensitive’ mutation in the gene encoding tyrosinase enzyme required for the melanin production. It does not work at normal body temperatures.

Question

. Let’s say that you have incredible skill and can isolate the white and red patches of tissue from the Drosophila eyes shown in Figure 12-24 in order to isolate mRNA from each tissue preparation. Using your knowledge of DNA techniques from Chapter 10, design an experiment that would allow you to determine whether RNA is transcribed from the white gene in the red tissue or the whitetissue or both. If you need it, you have access to radioactive white-gene DNA

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Question

Chapter 17, Problem 13TYU

Summary Introduction

To explain: The pattern of Siamese cat’s fur pigmentation due to ‘temperature-sensitive’ mutation in the gene encoding dark fur pigment.

Concept introduction:

Siamese cats have unique fur pigmentation pattern known as ‘colorpoints’. The pattern includes dark ears, face, legs, and tail, while a creamy white shade is seen on the back and belly. They are partial albinos. This is caused due to a ‘temperature-sensitive’ mutation in the gene encoding tyrosinase enzyme required for the melanin production. It does not work at normal body temperatures.

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