1.2 DNA

If Cytosine makes up 38% of DNA, What percent will be Guanine?

12%

Scientists can produce millions of copies of a specific DNA sequence using:

polymerase chain reaction, or PCR

DNA is cut at specific nucleotide sequences by

A restriction enzyme

TTAGGCATC: What is the complementary DNA strand to this segment.

AATCCGTAG

What characteristic separates DNA fragments during gel electrophoresis?

The phosphate backbone of the DNA (and RNA) molecule is negatively charged, therefore when placed in an electric field

What are the building blocks of DNA?

adenine (A), cytosine (C), guanine (G), and thymine (T) to linked to a sugar (deoxyribose) with a phosphate group to create a nucleotide

Which bases are purines?

adenine and guanine

What makes one's DNA unique from one person to the next?

different DNA sequences. but they are still 99% the same

What makes up "the steps" or "rungs" of DNA?

phosphate and sugar backbone

What makes up the backbone of the DNA molecule?

phosphate group deoxyribose sugars

In Gel Electrophoresis, larger pieces of DNA will travel ___ than smaller pieces of DNA

slower and to a closer distance

The shape of DNA is described as a:

the double helix looks like a twisted ladder