This week we are studying how our DNA is used as a "recipe" or "code" for all of our traits. Read the article More than a chicken, less than a grape by Tina Hesman Saey. What is the human genome project? What is a gene? What do genes code for? What is an intron? What is an exon? Why might scientists look at RNA rather than DNA to count the number of genes human's have?
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The human genome project is an effort by a group of scientists to discover all the genes in the human body. Genes code for certain characteristics in organisms. DNA is not made entirely of pieces that code for things. Some spaces are nonsense, and these spaces are called introns. Exons, or genes, are the parts that do code something. Some scientists are looking at RNA to find the number of human genes instead of DNA. They are doing this because they are able to find new genes that way. Since up until now people have only looked in DNA, it is helpful to look in another place also. This article relates to what we are learning in class because we are currently learning about DNA. The article shows how someone in the real world can use knowledge of DNA in a productive manner.
ReplyDeleteThe human genome project is a project to discover the genetic blueprint of humans and reveal all of the protein-producing genes needed to build a human body. A gene is what provides a coded instruction for a synthesis of RNA which then becomes a protein. Introns are the streches in the DNA that dont make protein, and exons are protein pieces in the DNA. Scientisits may look at the RNA rather than DNA in human genes because RNA is the single stranded molecules in the DNA. When really they are pretty much alike except for the substitution of deoxyribose and the nuckeotide bases.
ReplyDeletesicences do not know how the mount of genes. every confrence they have different mount of genes. the rna sequencing method detect the same proportion. 1 percent of the 3 billion as ts gs and cs the make up human genatic
ReplyDeleteThe human genome project is a project to decide the genetic blueprint of humans was supposed to reveal all of the protein-producing genes needed to build a human body. A gene is made up of DNA and act as instructions to make proteins. Introns are the genes that do not code for anything. Exons code for protein structures. Introns and exons interspersed with DNA. Scientists look at RNA instead of DNA because it is more accurate and they find a lot more new and different types of genes.
ReplyDeleteMore than a chicken, less than a grape is about genes. It says that grape plants have 30,434 genes,in the resent count. Chickens only have 16,736 genes. No one really knows how many genes the human body really has, but the most accurate count is the RefSeq database in the U.S.. As,Ts,Gs,and Cs make up the human genetic instruction book. If RNA sequencing methods detect the same amount of genes humans will gain about 3,000 more genes in to those already confined by RefSeq.
ReplyDeleteScientists still are not completely sure how many genes humans have. They have ran several tests, but all the results have come out different. Scientists have also run tests on chickens and grapes to see how many genes they each had, and got more accurate results. When they ran the experiment on humans to see how many genes we had, the results were not as specific. The answer is still not known, but scientists are getting there.
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