Apical dominance

The concentration of the auxin was not strong enough to maintain full dormancy of the lateral buds. The application of auxin is also dependent on the stage of development the plant is in for example auxin applied to a fruit tree can either drop the fruit or prevent the fruit from dropping depending on the stage the plant is in (Biology online.,(n.d)).According to scientific journals, like the plant journal, it is stated that cytokinin helps lateral bud growth as it allows the buds to escape apical dominance in plants but when synthetic auxin or natural auxin is applied it limits the amount of cytokinin to the buds causing the lateral buds to be dormant (Dorte et al.,2015). Auxin can be distributed in the plants unevenly due to light and gravity which can be the cause of the lateral buds being different lengths (Chang,A.,(n.d),p.1). Which means treatment one could have had more sunlight then treatment three. This also explains why the bean plants grew towards the sun because the light kills the auxin and slows the steam growth down and the leaves will grow more, hence the growth in the lateral buds…

Determining the impact of Auxin in pea plants, and its effect on lateral bud growth Megan Posey Bio 121-104 John Barry 10/23/16 Abstract Auxin is a hormone that helps to regulate bud growth, cell elongation, and many other aspects of plants. Apical dominance is a phenomenon that occurs due to the presence of auxin and stops lateral bud growth. In this experiment, we tested the hypothesis that a group of pea plants without treatment of auxin would have the most lateral bud growth, the 500 ppm…

Originally it was believed that all traits are blended together. Due to the work of Gregor Mendel, though, it was shown that characteristics are a result of inherited factors, known as genes1. Genes are units of heredity on a chromosome that bring about our existence and create diversity. This diversity arises from the fact that there are different forms of genes known as alleles. All the alleles of an organism are referred to as that organism’s genotype and results in an organism’s phenotype,…

Analysis of phenotype and genotype using Phenylthiocarbamide (PTC) variation taste sensitivity Introduction Taste occurs when chemical signals stimulate taste receptor cells in the oral cavity to detect tastes such as sweet, sour, salty, bitter and umami. PTC taste sensitivity is very common substance used to study taste perception. Many studies have provided insights into tastes perception using sodium benzoate and thiourea. PTC sensitivity has often been used for practical demonstrations in…

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…

Genetic Analysis in Plants Trev Mumm and Peter Masinelli Life 120 – Lab Section 122 April 28th, 2014 ABSTRACT We completed this lab to classify and count phenotypic traits in plant crosses with one or two segregating mutations, and we also learned how to use the Chi-Square test as a tool to access the statistical significance data collected from a genetic cross. Our hypothesis for the experiment that included green and albino corn genetics, was that the ratio of green to albino…

Johann Mendel was born on July 20, 1822 in Heinzendorf bei Odrau, a small village in the Austrian Empire. Mendel’s parents were poor farmers who made many sacrifices to pay for his education. Mendel did well throughout his high school career and, at age 18, he entered the University of Olomouc in 1840. During his time at the University, Mendel studied mathematics, philosophy, and physics. In 1843, at age 21, Mendel experienced financial troubles. Professor Friedrich Franz, a physicist,…

Confirmation of Mendel’s Law of Segregation I. In Biology class the past few weeks we have been learning about Gregor Mendel. Gregor Mendel is often called the father of modern genetics. Mendel developed the theory of inheritance several decades before the observance of chromosomes via microscope. In Biology lab the past two weeks I completed a series of tests using fast plants, Brassica rapa. The objective of this experiment was to study the Mendelian laws of genetics as they applied to…

Albinism is a rare genetic condition characterized by the reduced pigmentation in a person’s hair, skin, and eyes. In most variations of the disorder, it is an autosomal recessive condition, an albino individual would have to inherit the recessive allele from both parents. This condition has been of particular intrigue to me ever since I had been introduced to the disorder when reading a novel where the main character suffered from albinism. Even though this character had suffered extreme…

Gregor Mendel lived during the early 1820’s till the early 1840’s. He grew up on a farm in rural Austria, consequently education was not always the top priority. A teacher noticed his capabilities, and recommended a higher level of schooling, Gregor flourished in his studies, and became a monk. While being a monk, he was sent to a university in Vienna to further his studies. Mendel discovered genetics and heredity after experiments with a pea plant in his garden. He decided on pea plants based…