Question

Which of the following is an example of gene flow? A forest fire kills 50% of red-spotted chipmunks in a forest community. Pollen from a yellow daisy travels across a stream and pollinates an orange daisy. A bird with blue feathers is less camouflaged in the rainforest than a bird with green feathers. Mice with heavy coats are able to survive the winter better than mice with thin coats.

Answer 1

Answer:

Pollen from a yellow daisy travels across a stream and pollinates an orange daisy.

Explanation:

Gene flow refers to the movement of genes from one population to another population of the same kind.

From the alternatives given, Pollen movement from a yellow daisy across a stream to pollinate an orange daisy is an example of gene flow

Answer 2

Answer: Pollen from a yellow daisy travels across a stream and pollinates an orange daisy.

Explanation:

The gene flow can be define as the transfer of the genetic variation typically from one population to the other. If the rate of flow of gene is high enough, the two population in which the gene flow has occurred will become equivalent in allele frequencies and therefore will become the single population.  

Pollen from a yellow daisy travels across a stream and pollinates an orange daisy. is the correct option, this is because of the fact that through pollen which is the male gamete the genetic variations are passing from one population to another population of the same species of daisy. Thus the allelic frequencies will become the equivalent in the two populations of the same species. Thus this will result in the formation of the single population.