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2 Οκτ 2013 (πριν από 4 χρόνια και 8 μήνες)

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Unit 3 Essential Questions


What is DNA? What language is it written in?

DNA is deoxyribonucleic acid which is a long double helix of little patterns of
sugars and phosphates and base pairs (A,G,T,C
) which code for various proteins
to do jobs around the body of the organism. I don’t know if phosphates and
sugars and base pairs are technically a language but that’s what its written in.

2. Why is

it important to know about DNA?

Its important for us as

humans to have a knowledge of DNA so that we can
understand more about ourselves and how our bodies function. In the medical field,
this will be crucial to completely understanding a patient’s risk for certain diseases or
allergic reactions.

3. What does

DNA look like and how does its structure aid in its ability to replicate?

DNA looks like a double helix or a twisty ladder. Its shape allows it to be uncoiled and
used as templates to create new strands of DNA.

4. What techniques are necessary to attain
an uncontaminated DNA sequence that
can be compared to known data genetic bases by a forensic scientist or a

Some techniques to attaining an uncontaminated DNA sample are to use
uncontaminated utensils such as micropipettes or loops. Keeping w
orkstations clean
and keeping the DNA samples exposed to the air for the shortest amount of time also
assists in collect an uncontaminated sample.

5. How are DNA sequences compared to each other?

DNA is compared and analyzed through bioinformatics system
s on computers to test
for similar patterns between them.

6. Why is bioinformatics the future of biotechnology?

Bioinformatics allows us to compare DNA strands. We could see similarities with
people of certain diseases and figure out how to cure them or a
id in treating them.
Diseases that evolve quickly such as the flu or AIDs could cease to exist because if
we could crack their genetic code we could possibly figure out a way to stop their

7. What impact has forensics had on solving criminal i

Forensics has added math and science to the good old “detective smoking in his
leather chair interrogating a suspect”. We are now able to prove where, when, and
how someone died… the why is a different story. But through DNA testing we can
rove if someone came into contact with someone else. We can also use finger prints
if a suspect had been in that place.

8. What are the limitations of forensics?

Some limitations include that it’s technically never been proven that no two
s are alike. Most of us assume this to be true but not all seven and
something billion people times ten for each finger have compared our fingerprints, so
how would one know? DNA can also now be fabricated, so it is possible to falsely
accuse someone of a
crime even though evidence shows otherwise.

9. What possibilities still exist in the field of forensics?

About 25 years ago we couldn’t use DNA as evidence in a court case. We’ve made
great advances since then and are still moving forward. We could have
a database of
fingerprints or DNA and with the slightest bit of DNA or finger print and BOOP it pops
right up on your screen, the person’s name, date of birth, hair color, favorite breakfast
cereal, anything.