When does a mutation have the most impact on allele frequency O A. When there is gene flow B. When the population is small C. When there is immigration D. When there is em oration​

Texas tech says that cooperative gameplay—a video game feature that allows players to work together as a team—leads to increased empathy in the real world.

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.

According to the passage weisers mother could be blamed for