If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Apply: natural selection


Male betta fish flare their fins and swim quickly around females to attract their attention. Males that are better at attracting the attention of females are more likely to mate and produce offspring.
Based on this information, which of the following is a trait that would likely become more common in a population of betta fish as a result of natural selection?
Choose 1 answer: