An interesting mutation is discovered in a species of wasp where the DNA sequence of the genome is unknown. In order to try to determine the molecular nature of this mutation, a geneticist treats mutant wasps with the chemical 5-bromouracil, a chemical mutagen that induces both types of transition mutations at high frequencies, and hydroxylamine, which induces only GC-to-AT transitions. Neither chemical mutagen caused the back mutation or reversion frequencies to increase beyond the low spontaneous values. Which of these types of mutations is the least likely to be the original wasp mutation

Make a claim about the factors that cause inherited genetic variations within populations. also make a claim about the effects of mutations.

12) several teeth were found in an area of flat land covered with trees and plants. the teeth were examined by a paleontologist, and it was determined that the teeth came from a shark. they found many other shark teeth in this area. however, the people who discovered the teeth were puzzled, because there was no source of water near where the fossils were found. what is the paleontologist's best explanation for why the teeth were found in this area? a) sharks used to live on flat land. b) this area was once covered with salt water. c) this area was once covered with freshwater. d) someone buried the shark teeth deep in the ground.

The smallest biological units that can evolve are