DNA, or deoxyribonucleic acid, is the carrier of genetic information for the vast majority of living organisms. The only known exceptions are RNA viruses.
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How distantly related are eusocial insects? Aren't members of a species much more related than 1/4, 1/2, or 3/4? [duplicate]
Possible Duplicate:
How many genes do we share with our mother?
I went to a lecture that talked about the behavior of social insects in terms of their relatedness of genes. For instance, ...
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44 views
Transcription factor binding site located in intron
I have noticed that some TF binding sites are located in the introns of the genes.
I am puzzled about whether the TF only binds to DNA in the initiation stage of transcription and will detach during ...
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1answer
156 views
How does a thymidine block halt DNA synthesis?
The best I've been able to find is that there's a feedback mechanism, but what is this feedback, and how does the mechanism work? If it's just that the concentration of thymidine is too high, why ...
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1answer
115 views
How to learn DNA Origami
Can you tell me is there any good softwares and tutorials which can be used to learn DNA Origami. I am new to this and want to learn from basics.
Advance thanks for your help
edited: INSILICO
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174 views
What happens when cells in your body run out of telomeres?
In my biology book I read about an experiment where the genes encoding telomerase were 'knocked out', but they could still live a normal life and no adverse effects were noticed until the 6th ...
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Superposing DNA
I have a series of protein models with DNA docked. I now want to superpose the DNA on a reference DNA molecule and extract the translational distance applied and the rotation angle used.
I can ...
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What is the purpose of Y-shaped adapters in Illumina sequencing?
Y adapters different sequences to be annealed to the 5' and 3' ends of each molecule in a library.
The arms of the Y are unique, and the middle part, connected to the DNA fragment, is complementary.
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DNA replication Okazaki fragments
I understand multiple origin bubbles; DNA polymerase only synthesizes DNA from 5' to 3' and all that. But what I don't understand is why it has to be in fragments. Yes, DNA is anti parallel, and so ...
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Papers linking telomeres and aging [closed]
I'm currently writing a piece of work about telomeres and aging, and wondered if you could share some good papers you've either read or know of.
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Evolutionally speaking, why do humans have 46 chromosomes
In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Monkeys, chimpanzees, and Apes have 24 pairs (twenty-four pairs), for a total of 48.
What caused humans to have 46?
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Do individual (free) nucleotides base-pair with other free nucleotides?
I had a student ask me about this and my google-fu let me down. He asked if individual nucleotides (not in a nucleic acid) base-pair with their complementary nucleotides, essentially forming many ...
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1answer
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Generating custom human DNA sequences based on traits such as eye colour?
I'm wondering if it would be possible to create software (unless some already exists, but I couldn't find any) to generate human DNA (the base pairs on the double helix) containing genes representing ...
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Are there beneficial genetic mutations identified by consumer DNA genotyping?
I'm looking at services like 23andme, and see that they identify a wide variety of genetic-based risks, like predisposition to diseases, hair loss, cancer, etc.
Are there a more "positive" DNA ...
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1answer
45 views
Can IVF decrease the probability of trisomy in the fetuses of older mothers?
Is trisomy mostly due to complications with fertilization?
If so, does in vitro fertilization reduce the probability of trisomy for the fetuses of older mothers?
If not, can zygotes be screened ...
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3answers
160 views
Separating DNA Fragments by Gel Electrophoresis. Are all the strands for one size the same?
My apologies if my question is too basic, and please point me to a more appropriate forum. I am reading the textbook "Essential Cell Biology" by Alberts et al, and am consulting other sources as ...
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1answer
32 views
Is episome a plasmid or a virus?
A plasmid is a small DNA molecule that is physically separate from, and can replicate independently of, chromosomal DNA within a cell.
In general, in eukaryotes, episomes are closed circular DNA ...
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1answer
20 views
Complexity in creating transgenic animals (e.g., mice)
Many papers I have seen describing transgenic rodent models (and presumably applicable to other model organisms) involve the knock-in, or modification to, a single gene, possibly two genes. With ...
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19 views
Do chloroplasts contain circular DNA? If so, why? [duplicate]
Does circular DNA have a specific advantage?
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best known indexing method / transformation to coordinates for gene sequences
What would be the best known method to transform a gene or proteine sequence to some coordinate space (so $t(G)$ is the transformed sequence) complying to following rules:
similar sequences ...
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1answer
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can you extract blood/DNA from a monitor lizard and create a dinosaur? [closed]
In the most basic sense, is it possiblr with, given all kf the similar reptile-like creatures that exist, can you experimentally develop a dinosaur-similar clone species?
I want to do this, I just do ...
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1answer
40 views
How much can be said about behaviour (future) based on bloodgroup?
My bloodgroup for example is A+. How much information is knowing my bloodgroup? How much information can be known from a blood sample? I expect you to be able to clone if known a complete DNA sequence ...
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1answer
145 views
DNA chip contains a complete set of random hexanucleotide (6-mers) probes? (Solve) [closed]
can you tell me how to find solution to this question
A DNA chip contains a complete set of random hexanucleotide (6-mers)
probes. Out of the 4^6 = 4096 probes, how many will form perfect
...
