Genetics
DNA replication, Mendelian Genetics, mechanisms of gene expression, and related topics
1442 topics in this forum
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Hi, im new here and new to biology. After going over basic genetics in class, I came up with idea... If you have a plant, you can use restriction enzyme on the right sequence of the DNA bases, that produces chlorophyl. Then you can use animal or human zygote extracted DNA from the ectoderm and combine the extracts, and replace the original human DNA with the recombinant DNA. As the baby develops it should develop chloroplasts and reuse the co2 that the body naturally produces. Then it should reuse the co2 for the production of o2 and vice-versa. Thats a far reality i realize but is this even possible??? Would the chlorophyl enzymes work with the high human body t…
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- 7 replies
- 1.8k views
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Universally conserved sequences of DNA strongly suggest a single common early ancestor. Any one disagree? This common ancestor must predate the Cambrian explosion of life, since all life today shares these sequences. Any one disagree? "...New chemistry and genomic tools have revealed that the Shark Bay stromatolites have remarkable biodiversity, with evidence so far of more than 100 species of bacteria. In effect, this suggests that by 3.5 billion years ago Earth was already teeming with diverse microbial life." --ACA deputy director Professor Brett Neilan Earliest life on earth was both anaerobic and diverse. Any one disagree? The common an…
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- 2 replies
- 1.6k views
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I keep getting these mixed up... Multiple Sex-linked any way to help separate them? give characteristics would be most helpful.
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- 1 reply
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The other day I bought an airsoft pistol and modified it into a gene gun. The problem is - I have no idea what to do for a project now. I don't want to coat a BB with a complete set of DNA, and I can't isolate individual genes, so I'm stumped. Any ideas for projects would be welcome.
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- 5 replies
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I just wondered if instinctive behaviour can be passed on genetically OR is it environmental OR is it a mixture of both? If it is a mixture of both environment and genes passed on from its parent, does it show that gradual accumulation of mutations is not the mechanism for evolution of instinct?
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- 2 replies
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how computer science can benefit from DNA researches? Would it be possible in the future to analyse DNA in such a way to 'extract their natural algorithms' (surely the information written in DNA must know some clever algorithms to create such a complicated organisms as humans) that we could later apply in computer sciences? The is not much information out there so I decided I would ask people on computer science / DNA forums: http://www.scienceforums.net/ ; http://dna-forums.org
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- 4 replies
- 1.8k views
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It's an interesting experiment, because aside the Jurassic Park angle, because there could be some interesting results from gene function experiments from extinct species. http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0002240
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- 2 replies
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Sorry to burden you with this, and feel free to label me a Creationist (I'm not), start a hate thread, and issue me warnings every time I post for next the five years, but, I have a science question regardless: I’ve always been mystified with theories about multiple “human” origins. There’s been a tension between the single genesis idea and the multiple origins idea. I understand the single, out-of-Africa, is back ‘in’. Which I can understand. Indeed have studied. But I never understood what was meant by “several human races” existing at one time. I’ve heard this, many times. Talk of several species emerging around the world, all being ‘human’? When they…
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- 4 replies
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What I don't understand is how, in the intermediate stage, the assembly of the pre-initiation complex is only partially depended on the LCR. In the next stage of LCR-dependent PIC assembly, is it the 'unknown' protein which binds to a complex of NF-E2 and the LCR that phosphorylates the C-terminal domain or RNAP? (This is a question for my final exam on monday, btw)
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- 1.2k views
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Anyone wanna guess how uncommon it is? Sorta random and out of the blue, but just curious.. and very bored. Please don't burn me!
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- 1 reply
- 2.3k views
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Anyone who’s read my stuff knows that I don’t know what I’m talking about. The implication is, that you, do. I’m interested in alleged examples of observed Speciation. My favorite it the Woods Hole Institute one. Seems Solid. Is it? But… any other Scientific examples?
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- 1.3k views
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In the animal world, animal behavior can be attributed to genetics. The question I have is, since humans have been practicing various forms of religion for at least 10,000 years and since for most of history, this training has been an all day event through both choice and forced social conformity, has this caused religious based genetics to be engrained within humans? For example, the domestication of animals during that same time period has led to basic changes in animal behavior that now appear to be engrained in their genetics. Is the human version of this domestication, due to religion, also engrained in modern human genetics?
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- 6 replies
- 2k views
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Hi all In fact I need a help. I need a good method and speed one to extract 16S rRNA from bacteria. Thanks,:eek:
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- 13 replies
- 9.4k views
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Can someone help me solve the following question: In man, the two genotypes D/D and D/d are Rh+ and d/d is Rh-. The frequency of Rh- people in the population is about 16/100. a) what proportion of the children in a series of families in which one parent is Rh+ and the other Rh- would be expected to be Rh+? b) What proportion of the children from a series where both parents are Rh+ would be expected to be Rh+? c) Amongst the Rh+ children from part b, what proportion are carriers? I somehow got 84/625 for part a and 1-(84/625) for part b. I'm pretty sure it's totally off, so if someone can help explain this to me, I would appreciate it. L
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- 1.1k views
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Mile stones between prebiotic chemistry to present day DNA based life Organic Chemistry (no evolutionary principles apply yet) First replicator (fundamental principles of evolution apply for the first time) Something analogous to if not Ribozymes (serving only as enzymes) or Nucleic Proteins But limited to only what can arise spontaneously again and again for each generation of replicators. (This is the toughest time for replicators, since natural selection still can not operate on the enzymes and nucleic proteins that may have arisen.) Replication of Information Describing Organisms (possibly nucleotides) Coincident with Active Metabolism …
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Hello, I'm a student entering university soon and have a, frankly, rudimentary understanding of the intricacies genetic engineering of plants. Thus, I have a few questions regarding it. 1. This is probably the simplest of my questions; when injecting foreign DNA into plant cells, does it necessarily matter where you place the new gene into the plant's genome as long as the necessary "trigger" sequences are in the gene (that is, the sequences that tells the plant to produce the certain encoded enzyme)? 2. What generally dictates/limits how much of a certain compound is produced by an enzyme (other than availability of raw reactants) with regards to genetic sequ…
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- 2 replies
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Hi, I am currently working on a research paper concerning the subject of cloning. I would like to interview an expert on the topic for my paper. What is your view on cloning (humans, animals) in a few words? What are the advantages of cloning? Disadvantages? Could a cloned human be considered human? What are the scientific reasons to stop or continue cloning? Moral Reasons? Thank You In Advance -Claudia
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- 3 replies
- 1.3k views
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It may be silly, but I'm fascinated by the idea of creating something living out of non-living things. has anybody ever made a cell out of non-living matter? and can you make DNA? sorry if this is dumb. I'm 16 and know nothing much about science but it does interest me. I asked my chemistry teacher the second question and he said you can make proteins.. then he gave me a weird look, so i didn't ask him any more questions [science teachers have a way of making me feel very stupid]
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- 14 replies
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Guys, need your expertise. Can you tell me what is the legal definition of "Genetic Modification" ? I am doing a small research and some of the techniques involve genetically modifying a catalyst but I was informed it is only genetically modified if the catalyst in enhanced to do more than it's naturally capable of. i.e. if catalyst "x" is capable of producing products "a", "b" and "c" and it is genetically modified to also produce "d", then it's genetically modified. However if the same catalyst was modified only to produce "a" and "b" but not "c", by law it's not genetically modified, although technically it is modified. Am I making sense here? Can you help?
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- 6 replies
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What governs if a sequence applies to physical traits or behavioral traits? Is there any rhyme or reason to the coding to signify what they represent?
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- 2 replies
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where do things stand on this? is there any consensus on a resolution for this??
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- 1 reply
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In 1974 the Arecibo radio telescope transmitted a radio signal into interstellar space. The intended content of the message was almost entirely biological information. Among which information was the inaccurate number of nucleotides in human DNA. In 1974 we believed that there were in excess of 4 billion base pairs in human DNA. What would a group of humans with an interest and varying degrees of education in biology make of such a message, if they had intercepted it? Anybody want to take a crack at cracking the code? Anyone can look up what the message means by simply Googling "1974 Arecibo radio message" But thinking people might prefer to "decipher" …
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Click the image for the animation This animation is of DNA polymerase replicating both the leading and lagging strand of DNA. This is a visualization of a group of molecules that are smaller than the wavelength of visible light, copying the instructions of life. It a spectacular animation of a process going on inside all of our bodies a billion times over as you watch it on the screen. The molecular sized machines at work here are built according to instructions found in the very DNA they could be replicating. The instructions in DNA describe how to build molecular sized machines, proteins, that carry on both chemical and mechanical activity. Enjoy! …
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- 6 replies
- 3k views
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hi all; I need your help in this. I am working on SSCP (Single Strand Conformation Polymorphism), the instrument I use is ABI Biosystems 3130. we had to change the array for another type of work for few days and after that I put back my array and I ran spatial calibration but the baseline was up and down and the numbers were off the range. The capillary wasn't broken under the technician inspection!!! do you have any idea why the spatial calibration is acting strange? if someone had done this before please try to help. your help is highly appreciated
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- 1 reply
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hi all, I need your help in finding a software that can identify patterns. project summary: I have a DGGE photo and I measured the distance of each band so all of the band locations are numeric. I need to find a software that can take up those numbers and identify a patter for each sample colum. I hope my inquiry is clear. if not, I can explain more, just let me know. your cooperation is highly appreciated.
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- 959 views
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