Exam 18: Dna Technology: Making and Using Genetically Altered Organisms, and Other Applications

Adult stem cells can only differentiate into the cell types that comprise the tissues in which they are located.

Why was the nucleus removed from the egg cell used to create Dolly, the cloned sheep?

Taq polymerase is commonly used in PCR reactions because it ____.

All stem cells ____.

Bacteria protect restriction sites in their own DNA from being cut by restriction enzymes by ____.

I need to determine if the gene for a particular protein is the same length in frogs, humans, and trees. Which method(s) will be most helpful to me?

What is a GMO? What are the potential concerns and benefits associated with GMOs?

Genetically modified crops have been banned in the United States.

The Ti plasmid is used to ____.

PCR is ____.

The technique by which DNA, RNA, or protein molecules are separated in a gel that is subjected to an electric field is called ____.

Bacteria transformed with plasmids are plated on growth medium containing ampicillin and X-gal. Blue colonies on the plate contain bacteria with a ____ plasmid, meaning the lacZ⁺gene is ____.

Define the purpose of inserting a gene into a plasmid cloning vector.

In standardized DNA fingerprinting used in the United States, ____.

The CRISPR-Cas9 system is exploited experimentally for ____.

The key elements of a PCR reaction are ____.

Which statement correctly describes single-nucleotide polymorphisms (SNPs)?

Suppose a DNA fingerprinting analysis reveals that DNA from a crime scene matches a suspect's DNA at four out of five different loci. What can be concluded from this information?

The DNA sequence recognized by restriction endonucleases is generally ____ base pairs long.

Organisms that have been genetically engineered are called ____, because they have been modified to contain genetic information called a(n) ____ from an external source.