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Bio Lab Midterm Practical
Biology Lab Midterm
19
Biology
Undergraduate 1
03/19/2012

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Cards

Term
Why do you mash up the strawberries for DNA extraction?
Definition
breaks down tissues in the plant and releases individual cells
Term
Role of Salt in DNA Extraction
Definition
Removes proteins bound to DNA & keeps protein from precipitationg into the alcohol
Term
Role of Detergent in DNA Extraction
Definition
breaks down the cell membrane(phospholipid bylayer)
Term
How to seperate DNA from cell lysate
Definition
gently pour isopropyl alcohol over the lysate, DNA will gather in between
Term
5 Stages of Mitosis
Definition
Prophase, prometaphase, metaphase, anaphase, telophase
Term
meristems
Definition
area in plants(typically leaf tips and roots) in which mitosis is ongoing
Term
Prophase Time %
Definition
60% (.60)
Term
Prometaphase Time %
Definition
hard to determine
Term
Metaphase Time %
Definition
5% (.05)
Term
Anaphase Time %
Definition
15% (.15)
Term
Telophase Time %
Definition
20% (.20)
Term
Mendel's Principle of Segregation
Definition
states that pairs of genes segregate during the formation of gametes so that each gamete has one of each gene pair, but not both.
Term
Mendel's Principle of Independant Assortment
Definition
each gene pair is distributed independantly of other gene pairs during the formation of gametes
Term
Mendel's F2 Ratio for homozygous dominant and homozygous recessive
Definition
3:1
Term
Polygenic Trait
Definition
a trait made up from many genes in which none of the alleles are simply 'dominant" or "recessive"
Term
Arch Fingerprint
Definition
no ridges, simplest and least frequent pattern
Term
Loop fingerprint
Definition
has a "triradius"
Term
Whorl
Definition
2 triradii- count both, but only use the higher ridge count
Term
Total Ridge count
Definition
ridgecount added from all ten fingers
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