If you were performing an actual dna gel electrophoresis, what process would you have performed beforehand to amplify the dna isolated from samples?

Polymerase chain reaction (PCR)

Explanation:

PCR is a technique used to create many copies (amplify) of small segments of DNA. In order to achieve first, the DNA must be denaturalized with heat forming two strands that will serve as templates for the Taq polymerase, an enzyme that will duplicate de original DNA. This cycle is repeated 30 to 40 times to get as many copies as possible.

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if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d