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Some mutations are due to errors in DNA replication. During the replication process, DNA polymerase chooses complementary nucleotide triphosphates from the cellular pool. Then the nucleotide triphosphate is converted to a nucleotide monophosphate and aligned with the template nucleotide. A mismatched nucleotide slips through this selection process only onece per 100,000 base pairs at most. The mismatched nucleotide causes a pause in replication, during which it is excised from the daughter strand and replaced with the correct nucleotide. After this so-called proofreading has occurred, the error rate is only one per 1 billion base pairs.
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What is the ultimate source of genetic variation and the basis for the diversity of life on earth?
Mutations. These have quite a few different causes. Sexual reproduction is a "more recent source" {beginning 600 million years ago} of genetic variability. The process of sharing genetic information, coupled with the random crossing and mixing of genetic information during the creation of a new organism, leads to another source of genetic variability.
What binds to the prokaryotic chromosome to start DNA replication?
Regulatory proteins bind to the prokaryotic chromosomes to start DNA replication.
Is it easy for breeders to produce mutants with desirable mutations?
With luck and perseverance, however, breeders can produce a few mutants-individuance with mutations-with desirable characteristics that are not found in the original population.
How replication differ from translation?
well, since the previous person doesnt have a single working cell in his body, ill help u out Transcription- process that converts an mRNA message into a polypeptide. Translation- process of copying a sequence of DNA to produce a complementary strand of RNA. replication- process in which the RNA is duplicated
Few chromosome mutations are passed on to the next generation because?
Few chromosome mutations are passed on to the next generation because the zygote usually dies. Also the mature organism is sterile, and the mature organism is often incapable of producing offspring.
What is the ultimate source of genetic variation and the basis for the diversity of life on earth?
Mutations. These have quite a few different causes. Sexual reproduction is a "more recent source" {beginning 600 million years ago} of genetic variability. The process of sharing genetic information, coupled with the random crossing and mixing of genetic information during the creation of a new organism, leads to another source of genetic variability.
Which is more likely to develop adaptation to a changing ecosystem?
A population with few mutations will have more room in there genes to do mutations
Are genetic mutations always harmful to the individual?
Genetic mutations are not always harmful to the individual. A few may be beneficial.
Which is more likely to develop adaptations to a changing ecosystem a population that often has many mutation or a population that has few mutations?
A population with many mutations.
Where can one purchase DVD replication in bulk?
One can purchase DVD replication in bulk from the following sources: Easy Replication, Digi DVD, Disc Makers, Nationwide Disc, CDROM 2 GO, DVD Copying, to name a few.
What binds to the prokaryotic chromosome to start DNA replication?
Regulatory proteins bind to the prokaryotic chromosomes to start DNA replication.
Is it easy for breeders to produce mutants with desirable mutations?
With luck and perseverance, however, breeders can produce a few mutants-individuance with mutations-with desirable characteristics that are not found in the original population.
Why is it easy for a virus to mutate?
Mutations are very common in all organisms. There are various mechanisms of repair in most cellular organisms that detect and correct these mutations both as they occur and afterwards. Viruses are very simple organisms and contain very few proteins. Repair mechanisms are limited to the simplest mechanisms of the host cell. Since much fewer of the mutations are repaired, it is easy for a mutation to become permanently incorporated into a virus genome. Viruses also frequently use single stranded DNA or RNA, in which case mutations are much harder to detect, even for the simple repair mechanisms that may take place during the host cell's replication processes.
How many cats have ears?
All of them, with the possible exception of a very few (probably non-viable) mutations.
Why do variations occur?
Variation or traits are due to changes in the genes. The genes are found in the DNA and when they replicate, the process doesn't always work correctly. We have called these mutations. A few are positive for the species, some are negative (and are not passed on) and a few do not make any change at all.
How replication differ from translation?
well, since the previous person doesnt have a single working cell in his body, ill help u out Transcription- process that converts an mRNA message into a polypeptide. Translation- process of copying a sequence of DNA to produce a complementary strand of RNA. replication- process in which the RNA is duplicated
Is point mutation lethal?
No. Point mutations, or those resulting from a change in one or a few nucleotides at a single location in a DNA sequence. There are two types of point mutations: base substitutions and frameshift mutations. Not all mutations are in these coding sequences but if they are, then the result can be different or non-functioning proteins. They are considered to be neutral, beneficial or harmful. Two harmful point mutations are sickle cell anemia and polycystic kidney disease.
