Allele

Eukaryotic organism such as drosophila have been used extensively to demonstrate the classical Mendelian laws because they are inexpensive and abundant in genetic variations due to a small number of chromosomes. The purpose of this lab was to determine the phenotypic ratio for monohybrid and dihybrid crosses using drosophila. In a monohybrid cross, a single trait (eye color) is crossed in the organism and in a dihybrid cross,two different traits (eye color and wings) are crossed for a…

Genes are what parent passes on to their off spring. The reason that the off spring don’t look identical to the parent is due to a process called crossing over during meiosis.. Meiosis creates new cells that contain different data than that of the parent due to the genes getting shuffled around by cross linking. The chromatids which are parts of the chromosome cross over bits of data making the new cell unique from the parental chromosome. Dividing this way will ensure that the genes will be…

flies, those displaying a phenotypic mutation, are recessive (Hunt, Bridges, and Sturtevant, 1925). We chose to hypothesize that both crosses are autosomal, unlinked recessive due to the fact that they the mutations are being crossed with a dominant allele. (Hunt, Bridges, and Sturtevant,…

breeding of pea plants Mendel formulated from his observations a 9:3:3:1 ratio of phenotypic traits in the second filial generation. Thus he formulated the law of independent assortment which will be examined in this experiment. This law states that alleles for different genes separate independently during gamete formation (Reece et al., 2011). The Drosophila Melanogaster is the organism used to study Mendel’s proposed patterns of inheritance because of its obvious advantages in that it is…

3. Results Considering the morphological characteristics of the ecotypes, the cladode shape was elliptic or ovate, the number of spines varied among three classes (many, intermediate or few), the flowers had two types of petal color (scarlet or yellow), the fruit was elliptic or ovoid and the pulp color was white, pale yellow or orange (Table 2). The OFI populations studied showed statistically significant differences for DM of the fruits, F (17, 34.24) = 31.61, p < 0.05, which varied…

ave you ever wonder how we our genes tells how we look, talk, what race we are this is all based on Genetics. In this essay we are going to talk about how Heritable/genetic trait, Dominant vs recessive genes, and mutation affects us and how it affects people with these genes. Without genes we will all look the same so rather i think that genes aren’t important they are very important. Heritable/Genetic traits are very important to us because these are the genes that we get from our parents. A…

The Drosophila melanogaster, also known as the fruit fly, was the primary research subject for Thomas Morgan. In 1910, Morgan used the fruit fly as an experiment to discover new mutations which could represent new species. Using the flies to research about heredity gave way to Gregor Mendel’s confirmation of his Chromosomal Theory of Inheritance which suggests that the chromosomes are the carriers of genetic information. The sex of the fly is important when culturing Drosophila and making…

Ectodermal Dysplasia Jonathan Moon American Fork Junior High A2 2/24/17 Abstract Ectodermal Dysplasia is a group of conditions that interfere with the normal functions of skin, hair, nails, teeth or sweat glands. These abnormalities cause various issues with everyday activities such as eating, brushing hair, exercising, and blinking. This paper will explain how this disease occurs, its symptoms, diagnosis, and treatment. Causes of ED Ectodermal Dysplasia, or ED, is a genetic disorder that…

Albinism is a genetic condition where people are born without their usual pigment in their body. Being albino gives you like a pale appearance it is also found in animals and plants. The eye will even look pink or red. Melanin is a chemical that we have in our body which is what is responsible for our eye, skin and even hair color. So when our body isn’t able to make a normal amount of melanin, or doesn’t produce any melanin at all is when they say someone is albino. Albinism is however said to…

effects of the antibiotic o whose offspring then inherit the resistance, creating a new population of resistant bacteria. Thus, natural selection constantly removes those genetic alleles that even slightly decrease average reproductive success. 3) That being said, the human population still has many deleterious alleles that are still prevalent given the high heritabilities and prevalence rates of severe mental disorders. So today we’re…