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No. The errors in copying dna gives rise to mutations within an organism, which is the key driver of evolution. The mutations which benefit the organism in surviving its environment make it more likely to reproduce, thus spreading it through the population. Mutations that arent beneficial are by the same process less likely to be spread. However sexual selection can override this general rule. As in the case of the peacock and its amazing tail. Although this tail is technically a hinderance to the peacocks everyday life, peahens have, by selecting males with the best tails, effectively designed the tail over many generations.
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Why is it more important to check for errors during replication than during protein synthesis?
Because if an error is made during protein synthesis, the result is at worst one bad protein. If an error is made during DNA replication, that error will persist for the entire lifespan of that cell and be inherited by every daughter cell it produces. Should the error prove deleterious, the effects can be catastrophic for the cell or the organism. For example, if an error occurs in a protein coding segment of DNA, it is possible that every protein that locus generates will now be defective.
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
Is DNA fingerprinting good or bad?
DNA fingerprinting is a useful tool for identifying individuals and establishing paternity. It can be beneficial in solving crimes, confirming relationships, and identifying genetic disorders. However, concerns regarding privacy, misuse of genetic information, and potential for errors exist, so it is important to use DNA fingerprinting responsibly.
How does mutation work?
Mutations are changes in the DNA sequence of a gene. They can occur spontaneously during DNA replication or due to external factors like radiation or chemicals. Mutations can lead to genetic diversity and evolution, but they can also cause genetic diseases if they disrupt normal gene function.
Why do new copies of DNA have to be similar to the original strand?
New copies of DNA have to be identical to the original strand so that the cells can function properly. If mistakes are made in DNA replication, it could cause a mutation to occur. In body cells, that means the possibility of tumors, including cancer. In gametes (sperm and egg cells), this could mean are very harmful genetic disorder, or it could be so bad that the organism produced by fertilization may not be able to survive.
What will occur if a DNA polymerase makes a mistakeduring DNA replication?
It do occur during the replication. DNA polymerase has a proof reading activity that can correct the wrong base in the sequence. If the mutation persist it may cause any bad effect or stay neutral in case of silent mutation.
What prevents the separated DNA strands from reattaching to one another during during DNA 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
Why is it more important to check for errors during DNA replications than during protein synthesis?
Because if an error is made during protein synthesis, the result is at worst one bad protein. If an error is made during DNA replication, that error will persist for the entire lifespan of that cell and be inherited by every daughter cell it produces. Should the error prove deleterious, the effects can be catastrophic for the cell or the organism. For example, if an error occurs in a protein coding segment of DNA, it is possible that every protein that locus generates will now be defective.
Why is more important to check for errors during DNA replication than during protein synthesis?
Because if an error is made during protein synthesis, the result is at worst one bad protein. If an error is made during DNA replication, that error will persist for the entire lifespan of that cell and be inherited by every daughter cell it produces. Should the error prove deleterious, the effects can be catastrophic for the cell or the organism. For example, if an error occurs in a protein coding segment of DNA, it is possible that every protein that locus generates will now be defective.
Why is important to check for errors during DNA replication than during protein synthesis?
Because if an error is made during protein synthesis, the result is at worst one bad protein. If an error is made during DNA replication, that error will persist for the entire lifespan of that cell and be inherited by every daughter cell it produces. Should the error prove deleterious, the effects can be catastrophic for the cell or the organism. For example, if an error occurs in a protein coding segment of DNA, it is possible that every protein that locus generates will now be defective.
Why is it important for DNA to be replicated before cell division?
so it won't die out
Why is it more important to check for errors during replication than during protein synthesis?
Because if an error is made during protein synthesis, the result is at worst one bad protein. If an error is made during DNA replication, that error will persist for the entire lifespan of that cell and be inherited by every daughter cell it produces. Should the error prove deleterious, the effects can be catastrophic for the cell or the organism. For example, if an error occurs in a protein coding segment of DNA, it is possible that every protein that locus generates will now be defective.
Will DNA unwind as a result of a mutation?
after mutation two kinds of effect may take place. good or bad. in case of plant good yieldin, big fruits etc.. are found but in man usually it make a bad effects. klinfilter syndrome, sikkle cell aneamea are some of such diseases.
What are bad sector errors?
what are bad sectors errors
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
What causes gene mutation?
Mutations occur due to DNA damage from environmental factors, such as UV light, nuclear radiation, or certain chemicals such as mutagens or carcinogens. Mutations also occur due to mistakes in DNA replication.
Why are there many replication forks?
A replication fork is the mechanism by which a strand of DNA is synthesized. If you can imagine a strand of DNA unwound, then it would resemble a ladder. Unzip the DNA and it now looks like a fork, ie fork in road, not eating fork. There is a Leading strand, which is synthesised easily. USing DNA polymerase which 'reads' along the strand in the 3' to 5' direction on the strand, producing a replication strand in the 5' to 3' direction. The opposite strand is called the lagging strand, and this is slightly more complicated. DNA polymerase cannot read in the 5' to 3' direction on the template strand. Thus DNA primase is used to read the strand and replicate small RNA segments, called Okazaki fragments. The lagging strand has no been copied into many small strands of RNA, or Okazaki fragments. Next DNA polymerase comes along and replaces all the RNA nucleotides with DNA nucleotides. ANd finally DNA ligase 'stitches' all the small fragments into one long strand.
