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Forensic investigators look for two different types of DNA in a strand of hair. Traditionally they look for nuclear DNA (nDNA) which comes from the nucleolus and you can get that if the strand of hair as the follicle intact and not too damaged. This is primary, but you can still get DNA from the hair shaft itself without the use of the follicle. This is Mitochondrial DNA (mtDNA), and though this type of DNA has less information than nuclear DNA, it is very stable and that's great for investigators or scientists because you can even extract that type of DNA from mummies that are many thousands of years old. So if you're wondering if you can be caught by the police if all they have is a piece of hair with no follicle, yes you can! The downside of using mtDNA versus nDNA is mitochondrial DNA is passed on from the mother, so if you pluck 3 pieces of hair, one from the mother, one from the brother, and the other from the sister, they will ALL be identical. So in this case it is no good at determining who is who. But if it's a random murder site where the suspect is being matched with a hair shaft, they are able to make a positive ID match that hair.
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Why are the scientists not concerned with analyzing the entire strand of dinosanaur DNA?
Because they just want to clone dinosaurs
What would match the DNA strand TCCGAACGTC?
The DNA strand, AGGCTTGCAG.
What is the role of the DNA new strand?
It is a copy of the Dna original strand.
Given the following strand of dna what is the complementary strand actggctac?
The complementary DNA strand to ACTGGCTAC is TGACCGATG.
Is DNA a single strand of nucleotides?
No, DNA, from difference with the RNA, is a double strand of nucleotides. DNA, double strand (hence the double helix nickname). RNA, single strand.
What is the strand?
The template strand, if reffering to DNA, is the strand of the DNA that is copied to make more DNA.
How accurate is DNA testing of hair?
Very accurate to the base pair. The quality of the specimen matters as DNA can degrade. Short strand sequences (10-12 base pairs) can still be determined by PCR from one strand of hair.
Why are the scientists not concerned with analyzing the entire strand of dinosanaur DNA?
Because they just want to clone dinosaurs
How is anything genetically modified?
Scientists have the means to extract the DNA strand from a cell. Once the DNA strand is removed, it can be altered, then placed back into the cell. When the cell divides and multiplies - the new copies will retail the altered DNA rather than having the original.
Name of the DNA strand which is copied to make mRNA?
This is typically called the template DNA, which is the anti-sense strand of DNA. The strand that is not transcribed is called the sense strand.
What would match the DNA strand TCCGAACGTC?
The DNA strand, AGGCTTGCAG.
What is the role of the DNA new strand?
It is a copy of the Dna original strand.
Given the following strand of dna what is the complementary strand actggctac?
The complementary DNA strand to ACTGGCTAC is TGACCGATG.
What is formed when reverse transcriptase is used on a strand of mRNA?
A strand of DNA
What is the complementary DNA strand template strand of atgccatgg?
The complementary DNA strand template of ATGCCATGG is the basic design structure. It determines how the DNA strand will be constructed and the process in which it is formed.
Is DNA a single strand of nucleotides?
No, DNA, from difference with the RNA, is a double strand of nucleotides. DNA, double strand (hence the double helix nickname). RNA, single strand.
During DNA replications a complementary strand of DNA is made for each original DNA strand thus if a portion of the original strand is CCTAGCT then the new strand will be?
CCAATTG
