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Retardation / Mutation

(Down syndrome)

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12y ago

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During DNA replication each strand of DNA is used as a template to produce a complementary strand of DNA. This process is shown below. Which base will attach to location 1?

Guanine


How many strands of DNA are there in a DNA fingerprint?

1 strand of naked genomic DNA cut by certain enzymes.


What does semi conservation mean in terms of DNA replication?

Semi-conservative replication means that when DNA replicates, each new DNA molecule contains one strand from the original DNA molecule and one newly synthesized strand. This process helps maintain the accuracy of genetic information during cell division.


When one DNA molecule is copied to make two DNA molecules the new DNA contains what percent of the parent DNA?

DNA replicates semiconservatively. This means 50% of the parent DNA is retained in each new molecule/double helix. DNA unzips and allows 2 new sugar-phosphate backbones to be inserted, each 'reading' off one of the old strands. While 'reading' enzymes add the complementary base pairs, pairing up each new strand with one of the parent strands. Thus when it is finished replication, each new strand will be bonded to each old strand. there will be a 1:1 ratio of old strand to new strand, thus a 50% remain of parental strand in the new strand.


The results of gel electrophoresis are shown below. What can you determine about the DNA from looking at the results of this test?

Strand 4 is the largest-Apex


Why is RNA only synthesized from one strand of a double-stranded DNA helix?

Not sure but I'm going to make an educated guess, your DNA doesn't want to leave the nucleus so it stays protected, your RNA is a translator and messenger it already has the 1 strand that can cooperate with the DNA so it can copy it exactly and then translate it.


The results of gel electrophoresis are shown below with four different strands of DNA labeled. Which strand of DNA is the shortest?

Answer this q The results of gel electrophoresis are shown below, with four different strands of DNA labeled.Which strand of DNA is the shortest? uestion…


Why is DNA replication considered semiconservative?

DNA replication is semiconservative because each new double helix contains (1) old and (1) new strand. each mother strand serves as a template for a new strand.The two strands are complementary, but not identical.


When DNA replicates what are the new DNA made of?

its made of DNA. Replication just doubles the DNA, just like when bacteria or humans replicate.. the new human is .. well made of human.... It is opposite and anti-parallel.... 5-AATGTC-3 Original strand 3-TTACAG-5 new strand Each new molecule will have 1 original strand, and 1 daughter/newly synthesized strand. DNA replication results in DNA DNA transcription results in a strand of RNA


What holds DNA strands apart during replication?

What prevents the wrong nucleotide from being added to the new strand during DNA replication? DNA polymerase 3 and DNA polymerase 1 can become what is known as exonucleases. an exonuclease can go back and "proofread" the replicated DNA and if there is a mistake, then everything beyond that incorrect nucleotide is removed and the DNA polymerase 3 will re-replicate from the bad point on. the protein p53 holds the cell in the G1 and S phase of replication which allows more time for proof reading the replicated DNA


HOW MANY STRANDS MAKES UP AN RNA MOLECULE?

Just 1 strand. DNA has 2.


What is the DNA pattern for a nucleotide?

a nucleotide is simply what the entire DNA strand is made of it contains the folloowing 1 sugar 1 phosphate 1 base either (adenine, thymine, cytosine or gaunine)