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- Multiple ChoicePlease save your changes before editing any questions.
In preparation for an electrophoresis procedure, enzymes are added to DNA in order to
convert the DNA into gel
cut the DNA into fragments
change the color of the DNA
produce longer sections of DNA
- Multiple ChoicePlease save your changes before editing any questions.
The parents of a new baby believe they brought the wrong child home from the hospital. Gel electrophoresis was performed using DNA samples from the parents and the child. A section of the gel
electrophoresis results is shown below. Which conclusion is valid based on the gel electrophoresis results?
They have the correct child, because her genetic information is identical to that of the father.
They have the wrong child, because her genetic information does not match that of either parent.
They have the correct child, because her genetic information came from both parents.
They have the wrong child, because her genetic information matches only that of the mother.
- Multiple ChoicePlease save your changes before editing any questions.
The results of which laboratory technique are represented in the diagram?
chromatography
manipulation of genes
genetic engineering
gel electrophoresis
- Multiple ChoicePlease save your changes before editing any questions.
Gel electrophoresis is used to separate DNA fragments on the basis of which property?
size
color
functions
chromosomes
- Multiple ChoicePlease save your changes before editing any questions.Based on these results whose blood was found in the blood stain at the crime scene?BobSueJohnLisa
- Multiple ChoicePlease save your changes before editing any questions.Which suspect is likely guilty?Suspect #1Suspect #2Suspect #3
- Multiple ChoicePlease save your changes before editing any questions.Which man is the father of this baby?Father 1Father 2Father 3None of them
- Multiple ChoicePlease save your changes before editing any questions.DNA fingerprinting works becauseMost genes are dominantAll organisms contain RNAThe most important genes are different among most peopleNo two people, except identical twins, have exactly the same DNA
- Multiple ChoicePlease save your changes before editing any questions.Why do the fragments of DNA in gel electrophoresis travel away from the negative electrode?DNA is negatively charged so attracted to the positive end of the unitDNA is positively charged to attracted to the negative end of the unitthe agarose gel in negatively chargedthe agarose gel is positively charged
- Multiple ChoicePlease save your changes before editing any questions.In gel electrophoresis, the largest DNA fragment will appearclosest to the starting wellsfarthest from the starting wellsthree quarters away from the starting wellsit depends on how many fragments there are
- Multiple ChoicePlease save your changes before editing any questions.Which is the primary purpose of using restriction enzymes in gel electrophoresis?It allows the strands of DNA to be cut into various lengths for testingIt restricts the number of base pairs that can be tested in a sampleIt makes the testing simpler by moving the strands into the gel fasterIt charges the DNA strands