Gel electrophoresis separates DNA fragments according to their ________
A) length
B) charge
C) polarity
D) base sequences
A
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Human caused introductions can occur by which of the following? Check all that apply.
_____ plants and animals accidentally escaping from ships _____ automobile or truck tires _____ being in the soil or on a plant sold at a nursery _____ seeds or organisms attaching to clothing or shoes _____ international cargo ships releasing ballast water in the ocean before arriving at port
In plants, the fertilized egg develops into a multicellular ____ (young plant) within a female gametangium
a. seed b. zygote c. embryo d. cotyledon e. endosperm
When you hear, the ________ vibrates. I) eardrum II) hammer III) stirrup
A) I B) II C) III D) I, II, and III
When conducting a scientific experiment, a(n) _____________ is tested.
A) theory B) prediction C) question D) answer E) null variable