Hear the different songs of three lacewing flies in this interactive activity. These songs are an example of a reproductive barrier that can lead to speciation; the differences among the songs determine mate choice and result in reproductive isolation between the different populations.Also included is a table summarizing the different kinds of isolating mechanisms.ear the different songs of three lacewing flies in this interactive activity. These songs are an example of a reproductive barrier that can lead to speciation; the differences among the songs determine mate choice and result in reproductive isolation between the different populations.
Introduction. A black eye is bruising to the tissue under the skin surrounding your eye. It's usually caused by a blow to the face, such as a punch, or an accident such as a fall.
This constant exertion can stress your eye muscles to the extent that your eye dominance can shift during the course of a round. âMost people donât know they have an eye-dominance problem and that leads to fatigue,â Todd explains. âYou cannot categorize eye dominance in black and white.