The Evolution of the Human 'Y 'Chromsome Essay Example | Topics and Well Written Essays - 5000 words

The Evolution of the Human 'Y 'Chromsome - Essay Example Females account for two X chromosomes while males have one X and one Y chromosome. Y chromosome is also one of the significant sex determining chromosomes in animals and since we are focusing on the human aspect, so the same is in human beings as well. In mammals, the gene SRY is located in the Y chromosome which has an effect on the development of the testis which in all fairness is an indicator of the maleness of a person. The Y chromosome spans 58 million base pairs which are indeed the building blocks of the DNA and there is a clear enough representation of around 0.38% from the DNA as present in the cell of a human being. The Y chromosome has within it 78 genes where there is a coding taking place of only 23 proteins which are very distinct and different in nature. Specifically talking about the Y chromosome now, we see that in the past, the scientists were of the belief that the human sex chromosome, the Y chromosome was just a minute and smaller version of the X chromosome, which indeed is the chromosome present in both the sexes, males and females. Moving further ahead on this notion, we discern that the research conducted by Dr. David Page who is a member of the Whitehead Institute for Biomedical Research showed that on the reversal of the Y chromosome there is a significant story as it brings out the essence related with the evolution of the sex chromosomes and not only that but also provides an area of respite for the genes present for the sake of male fertility. What these results have done is to educate one and all of the basis and importance related with the Y chromosomes. (Ribbert, 2003) More than that, it has portrayed the Y chromosome as being the basis for the different diagnostic techniques for literally thousands of men who are infertile and cannot have babies. The genetic differences are easily understood through the results thus achieved on the working done on the Y chromosome and these genetic differences are in line with the