Organisms can reproduce sexually or asexually. There are important differences between the two modes of reproduction. Which of these statements correctly describes one way that asexual and sexual reproduction are different?
A. Asexual reproduction increases genetic diversity, but sexual reproduction does not.
B. Asexual reproduction involves one parent, and sexual reproduction involves two parents.
C. Asexual reproduction increases a species’ chances of surviving unfavorable conditions, but sexual reproduction does not.
D. The offspring produced by asexual reproduction are not identical to each other, but those of sexual reproduction are identical to each other.

B

Explanation:

Asexual involves one parent and the offspring are identical

Sexual involves two parents and the offspring have genetic diversity and have greater chance of survival

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."