AP BIOLOGY

EVOLUTION

THE ORIGIN OF LIFE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Red fish and blue fish were in separate ponds. A big flood allowed the ponds to mix. Which evolutionary mechanism are we seeing?
A
Genetic Drift
B
Natural Slection
C
Gene Flow
D
Mutation
Explanation: 

Detailed explanation-1: -Mechanisms of evolution correspond to violations of different Hardy-Weinberg assumptions. They are: mutation, non-random mating, gene flow, finite population size (genetic drift), and natural selection.

Detailed explanation-2: -Mutation: A mutation could cause beetle parents with genes for bright green coloration to have offspring with a gene for brown coloration. That would make genes for brown coloration more frequent in the population than they were before the mutation.

Detailed explanation-3: -Genetic Drift Example Consider a population of rabbits with brown fur and white fur, white fur being the dominant allele. Due to genetic drift, only the brown population might remain, with all the white ones eliminated. A couple with brown and blue eyes has children with brown or blue eyes.

Detailed explanation-4: -There are four key mechanisms that allow a population, a group of interacting organisms of a single species, to exhibit a change in allele frequency from one generation to the next. These are evolution by: mutation, genetic drift, natural selection, and gene flow.

There is 1 question to complete.