What event might occur when favorable adaptations build up in a population over many generations?

a. starvation
b. extinction
c. migration
d. speciation

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca