In crocodiles, the sperm and egg combine inside the body of the female. then the female lays the eggs, and the young developes outside her body. which type of reproduction takes place?
a) asexual reproduction
b) internal fertilization
c) external fertilization

Which of the following is a common danger of commercial fishing?

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna