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what will happen to a double helix process created by a cheek cell dna extraxtion without adding dna polymerase
Nucleotide bases will not be sequentially attached to a growing chain of a new DNA. Replication of double helix will be stopped.
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9) It is known that the distance between nucleotides in DNA strands is 34 × 10-11m. How long is the 287 amino acid hemoglobin gene?
Ans. Distance between nucleotides in DNA strands is 34 × 10-11mWe know that 1 amino acid is made up of 1 codon.1 codon is made up of 3 nucleotide bases.Thus,...
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Helix rise per base pair in A form dna is?
0.23 to 0.26 nm (2.3-2.6 Å)
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How can mutations accumulate, given that the ells have repair systems that fix changes or breaks in DNA strands?
Cells have a variety of mechanisms to prevent mutations, or permanent changes in DNA sequence. These mechanisms include; chemical reversal, excision repair, and double-stranded break repair. However, mutations happen, and...
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Part I; Structure of DNA Describe the following terms as they relate to the structure of DNA i) Double Helix
The double helix of DNA is the description of the secondary structure of a DNA molecule. It consists of two strands that wind around each other. Each strand has a...
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Write the complimentary rna for dna strand: CCG TTA GGG ATC
The complementary RNA sequence is:GGC AAU CCC UAG
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Definition of cryptic satellite DNA: A satellite DNA sequence that cannot be separated from the main-band DNA by density gradient ultracentrifugation.
What's the meaning of main-band DNA.?
Main-band DNA is the DNA sequences, which do not contain the satellite DNA or other repeated sequences. It is the empirical name, which was given to bands on electrophoregram, which...
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In DNA replication,which enzyme separates the two strands?
DNA helicase
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<pre class="editor-code"><code class="prism">Who enables the breaking of hydrogen bonds between polynucleotide chains and the opening of the double-stranded DNA helix?</code></pre>
Protein helicase is responsible for breaking hydrogen bonds between polynucleotide pulling apart the two DNA strands.
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What makes the compound carcinogenic? Hint: consider amine nitrogen of guanine and disruption in the guanine DNA double helix structure. [4 marks]
Chemical Carcinogens are compounds which can cause cancer in humans and experimental animals. It has to be clarified if the compound acts in a genotoxic or non-genotoxic manner.
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