64 Answered Questions for the topic DNA

05/21/19

What makes DNA sticky-ends sticky?
When restriction enzymes jaggedly cut double stranded DNA it results in so called sticky ends. What is the substance that makes the DNA sticky?
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05/21/19

Does DNA react in all of the ways most other acids do?
As I understand it from my basic chemistry, there are some fundamental reactions that exist between any acid and other substances for example acid-base reactions that form a salt, and the existence... more
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05/14/19

How many gigabases of DNA are there on earth?
The human genome is about 770 MB, the _C. elegans_ genome is about 100 MB, the yeast _S. cerevisiae_ is about 12 MB. Different other genomes have been sequenced: how many GB of genomic DNA we have... more
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05/11/19

Why is thymine not incorporated into mRNA?
I am aware that in transcription uracil bonds to adenine and not thymine. But what is it that actually prevents thymine from bonding to adenine in transcription, that is not present in replication?
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05/06/19

How can you identify if a person is homozygous for a certain allele?
I've been thinking about starting a small private research project. In this project I need to find out whether a person is homozygous for a certain allele. The reason for this is that I'm really... more
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Dna Genetics

05/06/19

Does our DNA change during our lives?
As far as I know, DNA is the construction protocol of all organisms on Earth. Does it change when influenced by time and environment (physical laws)? As parents with schizophrenia are more likely... more
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Dna Genetics

05/04/19

Is there any other function of DNA?
We all know that DNA acts as a genetic molecule. Does DNA have any other function in the cell other than being a genetic material and carrier of information?
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05/01/19

How does DNA still work after recombination?
If you take two computer programs and randomly swapped pieces from each of them. The result is not going to work. It will just be garbage. If you take two novels and randomly swapped chapters the... more
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05/01/19

Are there differences in DNA between humans of today and humans from 2000 years ago?
Are there any significant differences in our genome compared to the genes of our ancestors from 1000-2000 years ago? And if there are significant differences, do they result in significant... more
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04/19/19

What is the number of DNA strands per cell?
I wonder if each cell possess only one strand of DNA which according to my book is more than "7 feet" long(if uncoiled), then why does human has 46 chromosomes which are actually coiled chromatin... more
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04/11/19

What is the advantage of circular DNA in bacteria? ?
From what I understand, bacteria have circular DNA. What advantages does it have over linear strands like for eukaryotes? Do there exist bacteria with more than one ring of DNA?
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04/11/19

Why are there exactly four nucleobases in DNA?
Does someone know why DNA is composed of four nucleobases? In particular, is there an explanation for the number? Why four and not two, or eight?
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04/10/19

A codon is a group of three bases that specifies a particular amino acid. Which of the following enzymes can ‘read’ codons on an mRNA?
a.DNA polymeraseb.Ribosomec.Primased.RNA polymerase 
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03/15/19

Knockout and knockdown of gene?
Out of curiosity, I got this question whether knocking out (deletion) of a gene on one side and knocking down (RNAi) of the same gene on the other side will affect the cell in a similar manner or... more
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03/14/19

Why is DNA antiparallel? Can it be parallel?
My biology textbook mentions that DNA is antiparallel and it got me wondering... Can DNA be parallel? What would happen if it was parallel? could DNA still replicate right?
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01/11/19

Replicate the following DNA strands using what you know about complementary base pairs.
AATACGTCCAGATTTT?TTAACCGAGTTCAGA?CCCGCGGAATATACA?AGGGCTACTTCAGAC?
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03/31/18

Which of the following best describes the organization of eukaryotic DNA?
Here are the options:   A. Each chromosome is circular when fully relaxed   B. Its genes are grouped in operons according to function   C. Many exons exist within its gene that must be... more
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10/10/17

template and coding DNA
If the template strand of DNA is 3’-xxx-5’, what are the first 4 amino acids of the protein?If the coding strand of DNA is 3’-xxx-5’, what are the first 4 amino acids of the... more
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10/06/17

Breeding Orchids
A horticulturalist breeds orchids, trying to obtain a plant with a unique combination of desirable traits. After many years, she finally succeeds. To produce more plants like this one, should she... more
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10/02/17

where do you think the bacterium that produces HindIII is found?
The optimal working temperature for the restriction endonuclease HindIII is 37°C
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Dna

07/08/17

What is the mRNA and amino acid sequence for this replication mutation DNA sequence: ATG CCC GAT TAA AGC AAA TAG CGC ATT TGA?
IT is 10th grade biology
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Dna

03/15/17

Uracil is always paired with adenine in double standed dna
I dont know the answer to this and i need it for biology. I dont know what pairs up with adenine.
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12/11/16

DNA Replication ?????
how can i replicate the following DNA strand into two double stranded pieces of DNA? A A T G C C G T A T A G C T C A T G C T AT T A C G G C A T A T C G A G T A C G A T
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Dna Biology

12/11/16

Watson and Crick
How did Watson and Crick use the data and conclusions of other scientists to put together the proper model of the double helix? What key thing did they do with the molecular shapes that solidified... more
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12/11/16

Translation of proteins
The interaction of what molecules causes the protein to fold into its proper shape? Therefore, the interaction of what molecules is responsible for giving the newly constructed protein its... more
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