Lesson 11: The Genome Flashcards
what is the human genome project
a project that wanted to determine the complete 3 billion nitrogenous base sequence of human DNA- it started in 1990
which groups announced the deciphering of the human genome sequence in 2000?
both celera genomics and the HGP
what is the human genome made up of
3 billion base pairs; this means that about 98% of your DNA does not code for a gene so is called a non-coding or junk DNA
what are the parts of our DNA that don’t code for a gene called? what percent of our DNA is this?
98% of our DNA does not code for a gene which is called non-coding or junk DNA
what happens once the genome was sequenced?
research could then be conducted to isolate genes and determine their function
what is functional genomics + an example
when research is conducted to isolate genes and determine their function
- ex: our ability to identify genes are a sign of increased risk for diseases like cancer (product of functional genomics)
how does DNA identification work
people in labs take a blood sample, extract it, and freeze it (for a specific duration of time)
what tools are used during DNA identification processes
swabs, petri dishes, tweezers, PPE
benefits of DNA identification
- DNA can screen for genetic disorders (ex: cystic fibrosis, huntington disease..)
- DNA identification is personal and private
- can possibly invent technology to bring back extinct organisms in the future by storing their DNA
- can develop more “workable” species
controversies in DNA identifications
- they are storing the blood of extinct animals or organism
- scientists may use this DNA identification in the future that may bring back extinct species
- scientists are holding an organism’s DNA for however long they want, thus leading to the potential of organisms being duplicated
what is DNA fingerprinting and DNA data bank and how does it work
- a judge can request hair, blood, or other organic samples to help identify convicts- the info is then stored on a national DNA database, where the police can use it to help identify people
- DNA fingerprinting uses a gel to create a pattern of bands, whih displays the characteristics of individuals
what is DNA fingerprinting and DNA data bank used in
- commonly used in paternity cases
- used to solve issues around ancestry/family information
benefits of DNA fingerprinting and DNA data bank
can result in less convicts being around and help police catch them to protect society from any potential crimes they may commit
issues or controversies surrounding DNA fingerprinting and DNA data bank
if the national database contains too many samples, it may increase the probability of innocent people being prosecuted for crimes they didnt commit
what are restriction enzymes and what are they used for
- type of enzyme that has the ability to cut DNA at specific locations on the genome
- there are multiple variations of restriction enzymes that each cut at different sites; they are like chemical scissors that can cut DNA at specific sequences