non-genetic factors like environmental conditions. These traits are subsequent distributions of varying phenotypes that vary widely among individuals. Probably the main reason quantitative traits are considered complex is because they can’t be analyzed as Mendelian traits. So, quantitative traits won 't yield precise results as Mendel 'simpler traits because a quantitative trait will not be influenced by one gene alone. So, the fact that more than one gene govern quantitative traits (traits that…
Introduction This experiment was designed to examine inheritance patterns in Drosophila melanogaster. Three crosses were set up to examine the inheritance of eye color, body color, and wing shape. The mutant males used in this experiment had: sepia eyes with ebony bodies, white eyes and yellow bodies, or sepia eyes with vestigial wings. All of the females were wild-type. It was also confirmed that the females being used were virgins. This fact was important since female flies can store the…
Throughout several generations Darwinism has been applied to several concepts, and people continue to expand on it everyday. Darwinism is merely just the evolution of species through natural selection, which was developed through Charles Darwin. Darwin did many tests and studies to advance and add on to many theories discovered by other scientists, but all of the theories discovered by other scientists just go under Darwinism. Darwin did not come up with every theory that is a part of Darwinism,…
a science by using agricultural breeding. Instead of looking at the pea plant as a whole, Mendel focused on its individual traits. Mendel concluded that each alternative form of a trait is specified by alternative forms of a gene. To follow the inheritance of genes from parent to child, Mendel first needed to be sure which genes each parent carried. Mendel reasoned that pure-bred plants must have two copies of the same gene for each trait. Pure-bred pea plants when crossed did not produce…
25 degrees Celsius, and yields a large amount of offspring. This results in large amounts of data over a short time period. In this lab, the purpose was to demonstrate how the Drosophila melanogaster is used in the field of genetics to study the inheritance of traits throughout the F1 and F2 generations. Drosophila melanogaster was introduced into the wild type and other mutant alleles such as white eyed, vestigial, and sepia. The results gathered in the lab would then be compared to actual…
Title : Drosophila melanogaster Sexual Inheritance Patterns Introduction: This experiment determines sexual inheritance patterns amongst drosophila melanogaster. The model species drosophila melanogaster was used to study the passing of genes from one generation to the next. These fruit flies are good model species because the birth and generation process happens very quickly comparatively. One generation of a fruit fly lasts approximately 10-14 days. Several different traits were chosen to…
melanogaster is under the control of the X chromosome to autosome ratio and with at least four major regulatory genes, which can help explain how to identify sex-linked inheritance within the flies. The purpose of the experiment was to become familiar with the techniques of working with D. melanogaster, investigate basic principles of Mendelian genetics, and to understand the utility of chi square analysis. The mutated phenotype received was known as the bar eye type which vastly differs from…
Sickle cell anemia is inherited as a complete dominance, a form of Mendelian genetics. The disease is an autosomal recessive genetic disorder (Addis, 2010). The alleles HbA and HbS in hemoglobin control the genetic expression of the trait. Hemoglobin (Hb) is a protein made of iron that is a major component of a red blood…
Chromosomal inheritance relates to how a person has 2 sets of chromosomes, 46 in total, that they inherited their parents. Chromosomes carry the genes, particularly the alleles that the offspring inherit. Gregor Mendel had no understanding of chromosomes when conducting his studies. He experimented and tested peas and discovered that some genes were dominated (showed up) while others were recessive (hidden). What he didn’t know was that chromosomes contained the genes that were responsible for…
My paraphrasing: It has always been told that one gets one’s genes from mom and dad. A child looks the way he does because he inherited genes from both parents, explaining why he does not look identical to a single parent. This notion, that Mendel and others widely accepted for the last hundred of years, is actually not entirely accurate. Rather than parents contributing the same number of genes to their offspring, it has been discovered that some of the genes the children receive only are…