Review the section \"Investigating Life: Size Matters in Fishing Frenzy\" Suppos

Question

Review the section "Investigating Life: Size Matters in Fishing Frenzy" Suppose further experiments were conducted on the random- harvested experimental tank. Read each description and decide what force of evolution it would represent if allele frequencies in the experimental tank changed Fifty fish survive A small group of A group af 200 fish an algal ntection tsh is removed to of the same and reestabish pupulation of 1100 theanother tank to start ther own popubon ntroduced into the Over marry generaticns, fish have the highest surviva Females seem to to mate withi I A predator is introduced that | | intermediate-sized the largest, most bightly colored | | intermediate szod i only teeds on fish Disruptive selection Stabilizing selection Nonrand om matingGenetie drift Gene flow

Explanation / Answer

Disruptive selection favors the extreme phenotypes: A predator is introduced that feeds on intermediate-sized fishes. Females mate with largest and brightest

Stabilizing selection favors the mean phenotypes: Over many generations, intermediate size have the highest survival rate

Gene flow are events that might take few individuals to a new environment to populate(founder effect)[some fishes removed to other tank] or reduce the population suddenly (bottleneck effect) [50 fishes survivin an algal infection]

Nonrandom mating is practiced by females when they mate with largest and bright colored fishes only.

Genetic drift happens when individuals from another population migrate into, or individuals from the population migrate out: This is happening when we introduce 200 fishes of same species

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