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What regulatory DNA sequences might be located thousands of nucleotides away from the transcription start site of a gene?
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∙ 13y ago
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∙ 13y ago
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How does the structure of a eukaryotic chromosome during mitosis differ from its structure during the rest of the cell cycle?
During cell division, chromosomes are condensed. They coil and supercoil, becoming thousands of times shorter and much fatter, so that they are visible under a light microscope.Being condensed, the chromosomes move freely through the cell during metaphase and anaphase without tangling.Much of prophase is taken up with this condensation, and much of telophase with its opposite: extension.During interphase, chromosomes need to expose sequences of nucleotides as templates for nucleic acid synthesis (transcription and replication). The chromosomes therefore have to be fully uncoiled (extended).
How thousands of different genes can be formed with just 4 nucleotides?
Gene is the functional part of DNA, i.e. gene is made up of DNA and DNA is made of nucleotides in which there are sugar, phosphate group and bases. For DNA four bases are required Adinine, Guanine, Thyamine, Cytosine. They can be arranged in different sequence to form different protein of DNA, so the different sequential arrangement of bases lead to the formation of thousands of different gene from four bases.
What is the definition of gene?
A gene is a part of DNA which constitutes of certain defined sequence of nucleotides that code for a specific amino acid. They are the hereditary blocks of DNA and are transmitted from one generation to the other in a particular species.
What r two basic steps of polypeptide synthesis?
The 2 basic steps of polypeptide synthesis are:Transcription - the synthesis of mRNA from a DNA template. Only one strand of DNA is copied, and a single gene may be transcribed thousands of times.Translation - the process where ribosomes synthesize proteins using the mature mRNA transcript produced during transcription. The ribosome attaches to mRNA, and then moves along the mRNA adding amino acids to the growing polypeptide chain.
Which of the following is true regarding complementary base pairing in DNA and RNA molecules?
Although the base pairing between two strands of DNA in a DNA molecule can be thousands to millions of base pairs long, base pairing in an RNA molecule is limited to short stretches of nucleotides in the same molecule or between two RNA molecules.
How many strands of nucleotides are in DNA?
Thousands upon thousands. Because DNA must contain all the characteristics of your being, it must be long.
Many thousands of proteins may have arisen from only a few thousand exons because?
regulatory proteins
How does the structure of a eukaryotic chromosome during mitosis differ from its structure during the rest of the cell cycle?
During cell division, chromosomes are condensed. They coil and supercoil, becoming thousands of times shorter and much fatter, so that they are visible under a light microscope.Being condensed, the chromosomes move freely through the cell during metaphase and anaphase without tangling.Much of prophase is taken up with this condensation, and much of telophase with its opposite: extension.During interphase, chromosomes need to expose sequences of nucleotides as templates for nucleic acid synthesis (transcription and replication). The chromosomes therefore have to be fully uncoiled (extended).
How thousands of different genes can be formed with just 4 nucleotides?
Gene is the functional part of DNA, i.e. gene is made up of DNA and DNA is made of nucleotides in which there are sugar, phosphate group and bases. For DNA four bases are required Adinine, Guanine, Thyamine, Cytosine. They can be arranged in different sequence to form different protein of DNA, so the different sequential arrangement of bases lead to the formation of thousands of different gene from four bases.
What numbers of protein that your genes produce?
Well I think this question may be misphrased. Proteins are mad eup of chians of amino acids. Amino acids are encoded/ made up of nucleotides that are encoded by genes. There are 20 different amino acids in the human body that combine to form hundreds of thousands of proteins. It is not possible to know how many proteins genes produce because not all genes have even been decoded yet. Furthermore, even if all of the genes in the human body had been identified, these genes would encode different sequences of nucleotides, that would then encode for different amino acids, that could then combine to form nearly endless types of proteins.
What is a splicing gene?
Gene splicing is the removal of introns(intervening sequences) from the primary trascript of a discontinuous gene during the process of Transcription.Gene splicing is the process of chemically cutting DNA in order to add bases to the DNA strand. The DNA is cut using special chemicals called restriction enzymes, which there are thousands of, and each one has its own, unique and specific code of DNA that it can cut.TRANSLATION: taking pieces of DNA from one or more organisms then combining them to create new DNA.
What genes are DNA and chromosomes?
DNA is a large, polymeric biomolecule composed of four different types of subunits called nucleotides. The sequence of nucleotides within the DNA molecule can encode information. All the information necessary to encode a protein is called a gene. DNA molecules can be extremely long - extending for millions of nucleotides. A chromosome is a single DNA molecule (encoding thousands of genes) plus associated proteins that provide structure and play key roles in the regulations of genes.
Are there any malls in Europe?
There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.
Is DNA made from thousands of kinds of monomers?
Human DNA contains 3 billion pairs of nitrogen bases, which means that it contains a total of 6 billion nitrogen bases, and 6 billion DNA nucleotides, which are the monomers of DNA. Each nucleotide contains one nitrogen base.
DNA makes up what?
DNA is a very large molecule, made up of smaller units called nucleotides that are strung together in a row, making a DNA molecule thousands of times longer than it is wide.Read more: What_is_DNA_made_of
What is a DNA microarray?
In a DNA microarray, thousands of DNA fragments are spotted onto a glass slide. Usually, it is a fragment of each gene (or cDNA) that is spotted onto these glass slides. Each of these fragments will be used for a hybridization reaction with mRNA that is collected from tissue samples. To determine the expression of these tissues, mRNA is collected and turned into cDNA. Fluorescent labeled nucleotides are added to the sample so that they will be detectable under a colored laser. Two samples are usually compared to each other. The labeled cDNAs are allowed to hybridize with the genomic fragments that were spotted onto the glass slides. The cDNAs from each sample will be able to simultaneously hybridize with the target sequences.
What is the definition of gene?
A gene is a part of DNA which constitutes of certain defined sequence of nucleotides that code for a specific amino acid. They are the hereditary blocks of DNA and are transmitted from one generation to the other in a particular species.
