Which statement best explains how crossing over increases the genetic diversity of sexually reproducing organisms? a. during crossing over, genetic information is exchanged between two homologous chromosomes. b. during crossing over, an ovum is fertilized by any one out of millions of unique sperm cells. c. during crossing over, homologous chromosomes are randomly segregated to different daughter cells. d. during crossing over, a mutation of a cell's genetic information occurs as dna is replicated.

Answer is: A. During crossing over, genetic information is exchanged between two homologous chromosomes.
Crossing over results in recombinant chromosomes during sexual reproduction, increases the genetic diversity of sexually reproducing organisms.
In crossing over matching regions on matching chromosomes break and then reconnect to the other chromosome.

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.