The cause of gene flow is movement of gametes. That is option B. Causes of gene flow is further described below.
What is gene flow?
Gene flow is the term that is used to describe how genetic materials are transferred from one population of organisms to another.
The major cause of gene flow is due to the movement of gametes which posses these genes. The movement may be due to the following:
- migration of individual organisms that reproduce in their new environment, or
- the movement of gametes related to the consequences of pollen transfer among plants.
Therefore, the cause of gene flow is movement of gametes.
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