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Gene Linkage And Mapping Of White, Yellow And Singed Genes

877 words - 4 pages

GENE LINKAGE AND MAPPING OF WHITE, YELLOW AND SINGED GENES

ABSTRACT

This paper looks at the study of genetics, we have crossed different genes to try and see how they cross to come up with different genetic makeup. The paper looks at Gregor Mendel who was particularly the first person to study genetics. It is inevitable to mention this distinguished scholar whenever the term genetics comes up. He carried out experiments using plants. The study also looks at Morgan also did experiments with the Drosophila and he came up with answers to questions, which he had on the eye color of these flies.

INTRODUCTION

Genetics is simply a branch of science that deals with the study of heredity ...view middle of the document...

He also wanted to know if tall plants would always produce tall off springs, and dwarf plants the same. He came up with certain laws, which are referred to as Mendelian Laws. The first law is concerned with the segregation of characteristics. This means that for any single pair of characteristics, it is only one of these characteristics can be represented in a gamete. His second law was the law of independent assortment. This meant to explain that for any two characteristics, their genes are inherited independently. One can inherit a certain characteristic from the mother and another from the father. The mendelian rules are very important in genetics and has been applied for many years.

Morgan also did experiments with the Drosophila and he came up with answers to questions, which he had on the eye color of these flies. He crossed a white eyed male with a red eye female. This resulted in red-eyed females and white eyed males in the f1 generation. The f2 generation produced both white and red-eyed males, while all the females remained red eyed. He thus concluded that eye color in the drosophila fly was sex linked. This paper seeks to give a lab report on gene linkage and the mapping of white, yellow and singed genes.

The aim of the experiment carried out was to help in familiarizing with some of the phenotypes commonly used in genetic research of Drosophila melanogaster. The accurate execution of the experiment would lead to a well revelation of genetic composition. The main aim was to test heterozygous whether...

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