Zygosity

Plant Genetics JANICE NALBONE Abstract This experiment is being done to show Mendel’s rule of dominance that says certain alleles are dominant and others are recessive. To show this, we are using tobacco seeds, a monohybrid cross comparing only one trait color. We are also showing Mendel’s law of segregation with a Dihybrid cross comparing two traits of color and texture. Introduction

Case Study – A Sickeningly Sweet Baby Boy Part I Questions 1. What additional information would you want to know to understand Emma and Jacob’s panic? To understand the cause of the panic that was brought to Jacob and Emma, you would need to know more about the state of the baby. This article just describes that the boy was having difficulty feeding, and after seven days he stopped feeding. This isn’t a situation that brings upon panic right away, but for Emma and Jacob it did. The panic

A couple, a man and a woman, sit in front of a screen. The woman said, “Let’s choose brown hair and grey eyes for him.” “Oh! He needs to be tall and smart,” replied the man. What the couple is doing is designing their future baby. It might sound crazy to be able to engineer one’s children genetically, but technological advancements in the medical and scientific fields have allowed this as a possible option for potential parents. Genetic engineering is controlling and manipulating the genes of an

Population Genetics / Hardy-Weinberg Problems Directions: Work out the following problems on a separate piece of paper. Show ALL work and circle your answers. 1) If the frequency of a recessive allele is 30% in a population of 100 people, how many would you predict would be carriers of this allele, but would not express the recessive phenotype? q= 0.30 p= 0.70 Carriers = 2pq = 2(.3)(.7) = .42 #= (.42)(100) = 42 individuals 2) From a sample of 278 American Indians, the following MN

Examining Mendel’s “First Law”: Observing Anthocyanin in Brassica rapa Abstract The foundation of genetics lies with the principles that Gregor Mendel outlined after his experiments with pea plants where he discovered the relationship between physical characteristics, or phenotype, and genetic traits, or genotype. This experiment aimed to reproduce Mendel’s results with the Brassica rapa plant, noted for it’s fast generation time, and anthocyanin, a purple pigment that can be visually tracked

In the current world population there is a large increase in people diagnosed with inflammatory bowel diseases (IBDs), lactose intolerance and/or a combination of the two. Theories suggest that the delayed onset of lactose intolerance, in patients who already have IBD’s, may arise as secondary lactose intolerance but only as a byproduct of the IBD. This begs the question of if the prevalence of an IBD predisposes that same person to lactose intolerance and if so, what are the drivers that allow this

Genetic engineering involves the transfer of foreign genes into the cells of animals or plants at an early stage in their development so that they develop with desired characteristics. Selective breeding is the process in which humans manipulate the gene pool by breeding certain organisms with desired phenotypic qualities and characteristics (such as high milk yield and disease resistant). The trait can be reliably passed on to the next generation and produce offsprings that meet specific requirements

Before Gregor Mendel’s discoveries in the mid 1800’s, most people had no clear idea as to why their children, and grandchildren, looked like them! Most people assumed that because the child was in their family, and created by them, that familiar looking offspring just simply happened. Gregor Mendel put all that guessing to rest. Mendel did experiments on two different colored pea plants. In the first test, he mixed a purple flowered pea plant, and a white flowered pea plant. He let these plants fertilize

Hereditary Hemochromatosis Iron is an essential mineral in the human body. It is involved in the transport of oxygen in the blood together with the haem group. However an overload of this crucial mineral causes a chaos in the human body. This overload of iron known as a haemochromatosis is defined by Dr. Griffiths (Griffiths, 2011) as “…an autosomal recessive disorder characterized by toxic accumulation of iron”. The hereditary type was first described in 1865. But it is until 1966 that scientist

Human genetics can play a major role in determining ones physical condition. One slight change in a genetic sequence can cause a disorder that can be life threating to the organism. Most of the genetic disorders are caused by recessive allele. In most cases this recessive allele is undetectable due to the disorder not being presented in the physical appearance. Hypercholesterolemia is an example of a human disorder controlled by a single gene. This human disorder causes high levels of cholesterol