Genetic Lab Report Sample

LAB REPORT FOR GENE LINKAGE AND MAPPING OF WHITE, YELLOW AND SINGED GENES

ABSTRACT

This paper discusses the study of genetics and how we have crossed different genes in an attempt to see how they cross to generate different genetic makeup. The paper discusses Gregor Mendel, who was the very first person to examine genetics. In his work, he performed experiments using plants. The research also discusses Morgan, who also conducted experiments with the Drosophila, and that he came up with answers to questions he had on the eye color of these flies.

INTRODUCTION

Genetics is a branch of science that relates to the study of heredity and its particular complex components. Genes are tiny units within cells which make heredity possible (Hand 1). Geneticists study how genes affect heredity and influence characterization. This study seeks to answer questions to some commonly asked questions. These are questions such as: Just how can parents that have blue eyes give birth to a young child with brown eyes? Why are some twins identical while others look remarkably different? How can parents who are tall have a young child who is short? Genes influence the development of particular diseases, height, skin, and eye color. This generated the development of this field of science, as people sought to have reliable answers to these and other questions.

Gregor Mendel was particularly the first person to examine genetics, undertaking experiments using plants. These plants were in a botanical garden at a monastery in Monrovia. Mendel based his study mainly on using peas as his primary source of study. He grew 34 various kinds of peas in a greenhouse to increase their maturity. He wished to find out if these peas would always produce true breeds, if green peas always produced green peas, and yellow ones yellow peas (Henig 14). That he also wished to know if tall plants would always produce tall offsprings, and dwarf plants the same. That he came up with certain laws, which are known as Mendel’s Laws. The first law is concerned with the segregation of faculties. This means that for just about any single couple of characteristics, only 1 of these faculties can be represented in a gamete. His second law was regulations of independent assortment. This meant to explain that for just about any two faculties, their genes are inherited independently. You can inherit a particular characteristic from the mother and another from the father. The Mendelian rules are very essential in genetics and have been applied for a long time.
Morgan also conducted experiments with the Drosophila, and that he came up with answers to questions he had on the eye color of these flies. He crossed a white-eyed male with a red-eyed 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 hence 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 goal 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-revealed genetic composition. The key aim was to test heterozygous and whether or not they have X linked mutation genes. The value of the research was to look for the difference involving the genes and their respective X chromosomes. The main intent behind the report was to help in preparing a lab report. The hypothesis made here was that crossing over could be observed in the F1 and the F2 generations.

Procedure/method

We carried out the experiment in the following manner:

• Melanogaster males were used in the experiment. The flies in the vial were then anesthetized. Three white males were then sorted and placed in a fresh vial.
• We obtained yet another vial of Canton-S D with melanogaster females. They were wild-type flies. The vial was anesthetized. Three wild-type virgin females were selected and placed into the same vial because the three white males. The vial labeling was done in the correct manner.
• The reciprocal cross was manufactured from white female flies. These were anesthetized as before, and three of the virgins placed in a vial. Three wild-type males were put into this vial. These were also labeled like before.
• The vials were put under cauterized study.
• Data was recorded.
• Through the experiment, mutant virgin females were the general study basis, and all were female.
• The females were then anesthetized. Using a dissecting microscope, it had been confirmed that the flies were female and had the triple mutant phenotype.
• Two clean culture vials were obtained, and three of the virgins placed in each.
• Wild-type males were anesthetized, and three put into each vial of virgins. The vial was called before…