<p>Why doesn't genome size correlate to organism complexity?</p>
<p>PM me if you think you can help; I'd really appreciate it.</p>
<p>Thanks!</p>
<p>A lot of complex organisms can do without many different genes because of intron excision in post-transcriptional mRNA modification. For example, in one instance, out of 1234567, the cell might only use 12589 to code for a particular polypeptide whereas in a different instance it might use 34569 for a different protein from the same gene.</p>
<p>(From my STS paper and publication)</p>
<p>"Genes are entities that code for the production of proteins essential to organization and function in all living organisms. Before the completion of the Human Genome Project [1], it was believed that the higher order and structure found in humans in comparison to other organisms were the results of a larger number of genes, originally estimated to be around 100,000 [2]. However, by the end of the Human Genome Project it was determined that the number of genes in the human genome is between 20,000 and 25,000, only slightly greater than the 19,000 found in the worm Caenorhabditis elegans [2]. For this reason, a more comprehensive analysis was needed to explain the existence of the higher order and structure of the human. This led to the inception of a new field, proteomics. Proteomics is the study of the proteome, or the entire set of an organism's proteins, and how proteins interact with one another on a large scale [3]. Proteins are large organic compounds coded for by DNA. They are responsible for the defense of a cell, its structure and primary functions, and are critical to metabolism [4]. It is believed that the complexity of biological structures depends not on merely the number of genes and proteins an organism contains, but more importantly on how these genes and proteins interact [5]."</p>
<p>i hate biology i cant wait till this year is over ill never take this horrid class again. chem and phys all the way</p>