Traits and Extracting DNA Flashcards
passing the quiz
What are the 3 types of traits
physical, acquired. and behavior.
What is physical trait
Can be observed (eye color, height, left handed.)
Acquired trait
Learned skills (sports, musical instrument.)
Behavior trait
Instinctive actions (nest building, migration.)
what are 2 reasons that scientists isolate DNA
Body identification
Genetic testing.
what is contained inside the nucleus of every cheek cell
DNA
what does Lysis mean?
to separate
What is the purpose of the detergent. (we used dish soap.)
break open the the cell membrane and nuclear envelope causing the cell to release DNA
what was the purpose of the proteinase K? ( we used contact solution.)
cuts apart histones to free the DNA
what does the salt do
clumps together the proteins and other cellular debris
what does the centrifuge do
sinks the clumps of protein to the bottom and distributes the DNA
DNA is soluble, what does that mean.
it does not stay dissolved.
