How Did Gregor Mendel Become The Father Of Peas?

The observed results from the ¬F1 generation were that the phenotypes had to be EeNn x EeNn. The expected results for the F1 generation were also EeNn x EeNn because the P generation phenotypes for the male fruit fly were Ee and were Nn for the female P generation flies. The expected results for the F2 generation were a 9:3:3:1 ratio from the phenotypes NENenEne x NENenEne. The Chi squared value turned out to be 4.14 when the differences between observed and expected results were

The parents are both homozygous. The homozygous dominant would represent the wild type. And the homozygous recessive would represent the other fly parent of a different strain. The F1 generation would consist of 100% Wild Type but they would all be heterozygous in carrying the recessive gene.

Gregor Mendel theorized that certain combinations of alleles in a genotype would result in a specific ratio of phenotypes expressed in each generation. For example, in the case of the dominant heterozygous anthocyanin genotype, the P1 with (ANL/anl) crossed with the P2 (ANL/anl) would result in a 1:2:1 ratio for genotypes (ANL/ANL), (ANL/anl) and (anl/anl). However,

The motivation of this lab report is to use Mendel’s Laws of Inheritance to analyze and predict the genotypes and phenotypes of an offspring generation (F2) after knowing the genotypes and phenotypes of the parent generation (F1). The hypothesis for this experiment is that the mode of inheritance for the shaven bristle allele in flies is autosomal recessive in both male and female flies.

Describe the sex and phenotype of the mutant fly. Describe the phenotype as it compares to the wild type.

The Drosophila melanogaster is a fruit fly with a very short life cycle. They can be winged or wingless, and have red eyes or white eyes. The different options are called alleles. Alleles are the variants of a specific gene, and one is received from each parent on each chromosome. (“What Are Dominant and Recessive?”). It was chosen to use winged females and wingless males to predict the offspring in this experiment. The winged allele is dominant, meaning it only needs one allele to physically appear. The wingless allele is recessive, which gets covered up by the dominant allele (“Fruit Fly Genetics”). Each trait has two alleles in the flies’

Gregor Johann Mendel, the father of genetics, was born in 1822. He was a priest and scientist who became famous for his work and studies on the inheritance patterns using pea plants. Gregor Mendel used pea plants known as Pisumsativum in his research where he developed two fundamental laws of genetics known today as the “Law of segregation”, and the “Law of independent assortment” (Hartl, 1992). The “Law of segregation” states that when an individual produces a gamete, the copies of a given gene separate in which each gamete receives only one copy of that gene. The phenotypic ratio in the F2 generation according to the “Law of

Mendel’s law of independent assortment deals with dihybrid crosses meaning that independent assortment dealt with the crosses in Group 2 (ap+/ap; se+/se x ap+/ap; se+/se) and Group 4 (vg+/vg; se+/se x vg+/vg; se+/se). This is also the law of independent assortment as the cross deals with the production of haploid cells to the offspring (Gen.: Analysis & Principles, p28). Independent assortment is observed in these two crosses as there are to different traits within the

Abstract The objective of this lab to, develop an understanding of the inheritance patterns observed in a fruit fly. For this experiment we used Drosophila melanogaster as a model organism due to its short life cycle, small size, and its virtual inexpensiveness. Drosophila melanogaster commonly known as the fruit fly used in this experiment provided experimental data that was in agreement with the laws of segregation and independent assortment proposed by Gregor Mendel.

First is the law of dominance, this is when one trait is dominant over the other, that other trait is the recessive trait. An example is, when you have an ebony body one parent may be yellow while the other may be ebony. In this case, the yellow body parent was recessive in the offspring. The second law is the law of random fertilisation. This is when any fly can mate with any fly, an example is a normal fly can mate with a normal or apterous fly with normal fly. This occurred in our lab because all of our types of flies were in the one container and they decided which flies wanted to mate with each

Additionally, on the surface a fruit fly seems to share very few similarities with a human. For instance, humans do not have six legs, wings or an exoskeleton; and so, it seems imprudent to study fruit fly anatomy in order to comprehend Homo sapiens biology. Nevertheless, in terms of basic biological processes such as reproduction and growth, flies are very comparable to humans. Therefore, if we can find out how a central biological process works in flies, it is likely the process will operate in relatively the same way in

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 and have off spring. These two plants were known as the Parent generation (P Generation). The offspring they produced were known as the F1 Generation. The P Generation created an F1 Generation that was all purple pea plants. Mendel then bred a new generation of pea plants ONLY breeding plants with themselves. This new generation was known as the F2 Generation. Within the F2 Generation, the white flowered pea plants began to show back up. The ratio of purple flowered pea plants, to white flowered pea plants was a 3:1 ratio. Mendel also noted that the purple and white color had not been blended; the white color was just purely masked by the purple color in the F1 Generation. Mendel was then able to make conclusions about simple breeding. He called the purple flowers dominant, because they were more frequent than the white flowers. He called the white flowers recessive, because they were less frequent than the purple flowers. Therefore he concluded that the purple flowers were

Based upon observation of the F1 generation, we hypothesize that the inheritance of the white-eye (W) mutation is sex-linked and recessive wild type.

This table helps show all the possible genotypes from one set of parents. The table shows that the genotypes purple and starchy are dominant, and the genotypes yellow and sweet are recessive.(stallsmith)

He reasoned that there were certain rules by which these characteristics were inherited. He guessed that each plant must possess some sort of unit that specified its characteristics. In fact, each must have two units, one from each parent plant. If the plant inherited two different units, then one would override the other. This was called the dominant unit, and the one that was overridden was called the recessive unit. Mendel's theories were not discovered till 1900, and it began the science called genetics , the study of a physical inheritance. From this name, Mendel's units were changed into genes.