Question

question 6 of 12
which of the statements regarding gene flow are true?
continuous gene flow between two populations can cause both populations to become more genetically distinct.
migration out of a population can result in changes in allele frequencies in the population.
gene flow can result in the creation of a new and distinct species.
a vast desert can act as a barrier to gene flow.

Explanation:

• Continuous gene flow between two populations can cause both populations to become more genetically distinct: This is false. Gene flow reduces genetic differences between populations.
• Migration out of a population can result in changes in allele frequencies in the population: This is true. When individuals migrate out, the alleles they carry are removed from the population, altering allele frequencies.
• Gene flow can result in the creation of a new and distinct species: This is false. Gene flow generally hinders speciation as it keeps populations genetically similar.
• A vast desert can act as a barrier to gene flow: This is true. Physical barriers like deserts can prevent the movement of individuals (and thus gene flow) between populations.

Answer:

• Migration out of a population can result in changes in allele frequencies in the population.
• A vast desert can act as a barrier to gene flow.