Genetic Analysis in Plants

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Submitted By Danie08renee
Words 2405
Pages 10
Genetic Analysis in Plants

Abbey Emmanuel and Danielle Peterson

Life 120—Lab Section 136

October 29, 2014

Introduction Every living organism is made up of a series of genes. Each characteristic, such as color and texture, rely on the genetic coding of the organism. These genes can be passed along, mixed with other genes, or removed throughout the generations. The process of traits being passed from parent to offspring is called gene transmission. (Bailey, 2014) In the 1860’s a monk, Gregor Mendel set basic principles for heredity. His first law was Mendel’s law of segregation. He discovered this law while studying pea plants. He studied a series of seven different traits. (Bailey, 2014) He first observed and confirmed through experimentation that one pea plant of a certain color could self fertilize and produce another pea plant of the same color. He referred to the process of these self-fertilizing pea plants as true-breeding. (Urry et. Al, 2014) Mendel continued his studies of pea plants by testing that outcome of cross-pollination between two true-breeding plants. He took the two parent plants, one green and one yellow, and found the offspring to be all green. He continued experimenting by crossing two of the offspring from the first generation plants. Mendel found that in the second generation, an offspring color appeared from the parents that were lost in the first generation. His law of segregation explains that allele pairs segregate during the formation stage, but are capable of uniting during the fertilization stage. (Bailey 2014) Offspring inherit specific genes from their parents to obtain a certain identity through reproduction. The offspring have a specific DNA encoding within each gene that is made up of a sequence of nucleotides. These nucleotides are placed at a locus somewhere along a precise chromosome. (Urry et.…...

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