1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
creativ13 [48]
3 years ago
7

How has the use of pcr improved modern dna forensic science?

Biology
1 answer:
mestny [16]3 years ago
8 0
PCR (polymerase chain reaction) is a relatively new advance (1980's) but it has a great impact in our lives. Specifically, in forensic science, PCR is useful in many sorts of crimes . Up until the PCR method, in order to identify a person forensic scientists would use fingerprints or some other ambiguous methods like teeth marks etc. But now, with PCR, we can compare the genetic material found on a crime scene and compare it with a suspect's genetic material, definitively concluding whether they are the same person or not. The way this works is that we collect a sample from the crime scene with DNA and then PCR amplifies the quantity of DNA in that sample. One of the apparent advantages of this method is that PCR works with even a very small sample, often not even a single cell is required. This makes crime scenes full of information. Hence, succinctly, PCR has helped modern forensic science in that:
1) its results are more definitve than traditional identification methods and subject to less ambiguity
2) it is relatively fast
3) new pieces of evidence can be of value (like some hair cells) and identify the crominal in cases that in older times would be impossible to solve.
You might be interested in
An organism that exhibits a head with sensory equipment and a brain probably also ________.
Hoochie [10]
An organism that exhibits a head with sensory equipment and a brain probably also have receptors, which capture the stimuli of the environment and transform them into a nervous impulse, and organs of the senses that are the communication channels we have with the environment and thanks to them we understand and interpret the environment, they are: vision, hearing, smell, taste, and touch.
7 0
3 years ago
What do you understand by the statement" you are what you eat?
Bad White [126]

Answer:

protein,carbohydrate,lipids,nucleic acid

7 0
3 years ago
In 1783 Antoine Lavoisier showed that the heat produced by respiration was comparable to the heat produced when charcoal was bur
umka21 [38]

Answer: B. Combustion

Lavoisier’s oxygen theory of combustion was one of his most notable contribution to science and earned him the title of the “father of modern chemistry”. He recognized the combustible property of oxygen and that phosphorus and other metallic elements increased in terms of weight when burned.  

5 0
3 years ago
Read 2 more answers
Some careers involve daily exposure to dangerous situations, which can lead to emotional burnout. A person with damage to the am
Juliette [100K]

The limbic system is a region in the brain consisting of the thalamus, the hypothalamus, the hippocampus, and the amygdala.

When a person has amygdala damage, it would be expected to disrupt the integration of fear.

So, this kind of person will be efficient under fear situations avoiding emotional burnout.

Careers like bridge climbing or skydiving instructor are good for this kind of person.

6 0
3 years ago
What cells produce the hormone testosterone ?
Svetlanka [38]

Answer:

Leydig cells

Explanation:

7 0
3 years ago
Other questions:
  • How are the codes for specific amino acids formed
    6·1 answer
  • If the radius of the mesocyclone (the rotating updraft of the supercell) contracts inward, the wind speeds of the mesocyclone mu
    6·1 answer
  • Why reason best illustrates why Hershey and Chase chose to use viruses in their experiments?
    9·1 answer
  • The bottleneck effect is used to describe an event where a population decreases. One example involves the northern elephant seal
    10·2 answers
  • ¿Quienes hicieron posible la formación de la atmósfera?
    6·1 answer
  • A certain drug is made from only two ingredients: compound A and compound B. There are
    8·1 answer
  • Why is it important to determine the manner/mechanism of death
    12·1 answer
  • Scients is a combination of three things what are they?​
    9·1 answer
  • How do vasoconstriction and vasodilation contribute to the homeostasis of body temperature ?​
    5·1 answer
  • without clean water, more than 1a million women lose their lives every year. increased disease is apparent in the 44 million pre
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!