Law Of Segregation: A Genetic Analysis Essay

Genes are molecular units of heredity which encode for different types of traits. Each organism has traits that are defined phenotypically and can be studied though the field of genetics. Genetics is the study of genes, heredity, and how they cause variation in different living organisms. Scientists study genetic pattern in different organisms to determine the different trends in a certain population.
In every organism, we obtain one allele from each parent. Alleles are types of genes that can be identified on the chromosomes, which are in the nucleus of the cell. Alleles are either dominant or recessive. Dominant alleles are the ones that are usually phenotypically expressed, while the recessive alleles are usually silenced by the dominant…

These two laws contributed greatly to what we know about genes today. The first law is the Law of Segregation. This law states that every organism has a pair of alleles. Within this pair of allele, one of it is randomly selected to pass on to the offspring. This supports the fact that the mother and the father has to give an allele to the offspring to form a pair of alleles. Depending on which allele is selected from each parent, the offspring will express different phenotypes. The second law is the Law of Independent Assortment. This law states that separate genes for different traits is separated independently from one another and one of them is passed onto the offspring. This means that a particular gene in the pair that is passed on has nothing to do with the selection of gene for any other trait. During gamete formation, the alleles separate from one another creating…

The X/Y sex chromosomes and the 2,3,4, autosomes. It is important to know the differences between the two adult sexes in order to record and collect the data accurately. The major sexual differences in Drosophila are apparent in the abdominal segment of the flies. In males, the last abdominal segment of the male is much larger and rounded than that in the female. Another indicator is the presence of sex combs present in males. Male flies has a small, densely packed bristles call sex comb on the outer joints of both forelegs. Females lack sex combs. Therefore, if one sees sex combs on a fly, it is certain that the fly is a male. Female fruit flies remain virgins for approximately six hours after hatching but will mate after the six hour window. It is important for the female flies to be virgin, so one knows which fly genotypes are…