Mate guarding is a behavior adapted by any member of a pair to prevent the other mate of the pair from going after other potential mates or prevent other potential mates from having access to an individual’s mate. This behavior is exhibited by both males and females to retain sexual access to a mate while increasing reproductive opportunities. An example of this behavior can be seen in lizards. Male lizards ensure they stay close to their female mates to ward off potential mates.
Crossing over is a process that happens between homologous chromosomes in order to increase genetic diversity. During crossing over, part of one chromosome is exchanged with another.
It does in fact that's really what natural selection is all about it uses the characteristics that would better help the organism survive therefore making the species thrive
