Sunday, October 17, 2010

6th Period: Size of the Human Genome

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?


19 comments:

  1. The human genome project set out to decipher the genetic blueprint of humans and record all of the protein-producing genes needed to complete the human body. A gene is a DNA strand that codes for a certain protein. Genes work to produce proteins for a cell. An intron is a section of a DNA strand that does not code for a protein. An exon is the section of DNA that does code for a specific protein. Scientist would rather look at RNA compared to DNA because RNA is the nucleic acid that deals with the production of the proteins whereas the DNA merely has the instructions. That is why a scientist would rather count the number of genes from RNA. That's all folks!

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  2. a gene conects a organism to another. the scientist might look in RNA becuase it has amino acid which is a protein.the genetic code is the same in all living things, it is very important engineering.

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  3. http://www.sciencenews.org/view/generic/id/64304/title/Getting_to_not_know_you

    i think its about how to predict a relationship of a couple. people had been predict this since long time ago and 40% percent of younger couples had been living a life successfully.

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  4. Humans have an immense amount genes and proteins. Although there are only 4 bases, the amount of combinations number over 20,000. This large amount of protein combinations is what allows human cells and processes to be so diverse. Although there is a lot of research being put into the human genome project, scientists have still not come to a definitive number. There are a couple different methods of finding these genes, using machinery or doing it by hand. Scientists are employing both methods and are continually finding more gene combinations. Although we may eventually complete the human genome project, for now the human genetic code remains an expansive mystery.

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  5. The human genome project was meant to decipher the genetic blueprint of humans. It was to reveal all of the protein producing genes needed to build a human body. Genes code for protein. An intron is a section of the chromosome that does not code for any characteristic traits. Exons are protein-encoding pieces that is interspersed with streches of DNA that don't make protein. Each exon only codes for a portion of a protein. Scientists might look at RNA rather than DNA to count the number of genes humans have because from the test they did on fruit flies, there was an increase in genes. Depending on what information that is gained from looking at the RNA can impact the amount of genes scientists think humans have.

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  6. 1) The human genome project is a study in which scientists research on the sequence of chemical base pairs. 2) A gene is unit of heredity in a living organism. 3) Gene's code for specific proteins/amino acids. 4) Within a gene, there are introns and exons. Introns do not code for any characteristic, while exons do. 5) Scientists might look at RNA rather than DNA to count the number of genes human beings have because some sequences of RNA lead to the discovery of more genes than DNA.

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  7. The human Genome project is the project to decipher the genetic blueprint of humans which was supposed to reveal all of the protein-producing genes needed to build a human body.
    A gene is the basic physical unit of heredity; a linear sequence of nucleotides along a segment of DNA that provides the coded instructions for synthesis of RNA, which, when translated into protein, leads to the expression of hereditary character. An intron is a section of chromosome that doesn't code for any trait. An exon, also known as a gene is a section of the chromosome that codes for a specific characteristic/trait. If new RNA sequencing methods detect the same proportion of new genes in people as were found in fruit flies, the human genome could gain about 3,000 more genes in addition to those already confirmed by RefSeq. “That would be an exciting result,” Salzberg said. “I’d be surprised, but we like surprises in science.”

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  8. The human genome project was supposed to reveal all of the protein-producing genes needed to build a human body. Scientists still dont know how many genes make up the human genome. A gene which is also known as an exon is the section of the chromosome that codes for a specific trait. An intron is the section of the chromosome that does not code for any trait.

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  9. Right now scientists are still experimenting with the number of genes that are in certain living things. In a chicken there are 16,736 genes. In a grape there are 30,434 genes. And yet scientists are sill guessing at the amount of genes in a human. This relates to what we are doing in class because it solely revolves around DNA. Our last unit was about genes and our current unit is digging in deeper.

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  10. From this article i learned that noone really knows how many genes make up a human being. Scientists have discovered many different numbers of genes that are over 20,000 but noone really knows the accurate number. I learned that new genes form every year and will increase the following years so noone will really the how many genes there really are.

    The human genome project is the study of the whole human genetic material. Genes are the basic physical functional unit of heredity. Genes carry blueprints and are instructions to making proteins. An inton is a section of the chromosome that doesn't code traits and doesnt make protein. An exon is a section of the chromosome that does make proteins because they have codes for a specific trait. I think scientist would rather look at RNA instead of DNA to count number of genes because without RNA you couldnt make proteins and because genes only code for RNA.

    This has to do with what we are learning in class because we are learning about chromosome, DNA, RNA, protein synthesis, what they are and how they make protiens. We learned how chromosomes are organized peices of DNA and also that genes are made of DNA and that protein synthesis is how proteins are made.

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  11. 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?

    This article describes the human genome project. The human genome project is the cumulative effort of numerous scientific organizations trying to find the exact number of genes in humans. Though there has not been an exact number yet, scientists know that we have more genes than a chicken, but fewer than a grape; hence the title.

    Genes are parts of DNA which code for a specific protein's production: more specifically, which amino acids in what order are required to make it. Since trait in our body is determined by proteins, genes are the codes which determine our appearance and other personal characteristics. Another name for a gene is an intron. With introns come exons, which are sections of chromosomes which do not code for protein production. Because exons and introns are interspersed randomly in the genetic code, scientists are having a hard time sifting through and picking out each gene accurately.

    Today, scientists are using RNA rather than DNA to count genes. RNA is produced to serve as a portable copy of DNA, being single stranded and shorter since it only contains the coding required for a specific polypeptide. Because of this, scientists will be able to identify genes which were not found in the past and will ultimately have an exact count. Though computers process the info faster, manual sorting is up to twice as effective. Though the task is long and tedious, biologists are going to find the number- someday.

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  12. The human genome project is an effort to find all the human genes and the many permutations of those genes that can lead to a number of proteins. Genes code for proteins. An intron is part of the DNA that is not translated into protein. An exon is a discontinuous sequence of DNA that codes for protein synthesis and carries the genetic code for the final messenger RNA molecule. Scientists would rather look at RNA than DNA to count the number of genes humans have because the DNA is not as accurate as the RNA in the number of genes.

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  13. The human genome project is the effort to map out the human genome. Many scientist helped map out the human genome. A gene is a specific trait that we inherit from our parents and ancestors. Genes code for these specifc traits as the cellular level. An intron is a part of DNA that does not code for a specific trait, while an exon, also known as a gene is a part of DNA that codes for a specific trait. DNA contains our genes and traits, so scientists study them rather than RNA.

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  14. The human genome project is a project started a decade ago. Its purpose was to attempt to figure out all the genes in human DNA. In most cells, DNA is coiled up into chromosomes. These chromosomes are made up of sections called genes, which code for traits and characteristics. Within the gene, there are two sections, introns and exons. Introns are regions within a gene that don't code for proteins. Exons, on the other hand, do.
    Scientists would want to study RNA rather than DNA to count the number of genes because the RNA is the stuff that carries the actual blueprint of proteins to the ribosomes to be assembled. DNA just stores the information, making it much harder to sift through and figure out what is a gene and what isn't.

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  15. The human genome project is an international project where scientists struggle to identify all of the human genes. A gene is a DNA sequence that determines a trait. They code for a protein. An intron is a spacer of DNA that don't make protein. Meanwhile, an exon, which is also a DNA, convert proteins into a certain code. Scientists are currently looking at RNA instead of looking at DNA to count the number of human genes because in the past, 1,938 new fruit fly genes were discovered using this process. It may be that if they do the same thing, scientists think that they will achieve similar results with human genes.

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  16. In the article they author describes how difficult it is to find the different gnomes of the human body. The traditional way is to count them by hand one by one. Using computes isn't reliable enough so thats out, but a new way to find new genes has emerged. They can used RNA. RNA, specifically mRNA, codes for proteins. Proteins are what make you, you. they are your genes so you don't have to sift through introns the part of your DNA that does not code for proteins. If this new technique will help speed up the process and will give us an extreme leap forward in fighting diseases and disabilities like sickle cell syndrome that are caused by deficiencies in DNA patterns.

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  17. The human genome project was a project designed for deciphering the blueprint of humans. It was to show all the protein making genes needed to make up the human body, and was announced completed over a decade ago. A gene is made up of DNA, which codes for protein synthesis. An intron is a stretch of DNA that doesn’t code for making proteins. An exon is a piece of DNA that does code for protein making. Locating genes in RNA is easier than locating it in DNA, so that is why RNA has an advantage.

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  18. The human genome project is a project to 'decipher the genetic blueprint of humans', and it was created to show al of the protein-producing genes that are needed to build a human body. A gene is a part of DNA that's included in the process of making a polypeptide chain. Introns are segments of DNA, not needed to create proteins. Exons are segemtns of DNA, that code for proteins. RNA shows full versions of genes, so it would be easier to count.

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  19. The human genome project is a project designed to tell how many genes and new genes a human has and to "decipher the genetic blueprints of humans". A gene is a holds some of your genetic code. The genes code for a portion of protein. An intron is a spacer that doesn't make protein. An exon helps make proteins. Scientists look at RNA rather than DNA because they can pin point the new genes easier.

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