Example Mechanism of evolution 1. As habitats change, populations of northern pine trees that were once separated can now exchange pollen. This exchange of genes between populations is allowing the previously isolated gene pools to mix. 2. A sudden volcanic eruption kills many members of a population of elk. By chance, the individuals that remain do not have the same mix of genes as the original population effect 3. Although millions of praiie chickens once roamed the Midwest, their numbers founder effect dwindled to only 50 individuals in the 1990s. These few individuals have since produced a larger population. The genetic variation among the current population is quite low sexual selection 4. Insecticide resistance among mosquitoes is spreading around the world after mutations that originate in one population are spread to other populations through matings gene flow 5. Researchers discovered that female gray tree frogs prefer to mate with males who sound the longest mating calls 6. Tristan da Cunha is a remote island in the Atlantic Ocean. In 1814, 15 people formed a colony there, one of whom carried a rare gene for blindness The frequency of this gene is now 10 times higher on the island than on the mainland from which the settlers arrived
Answers: 1
Biology, 21.06.2019 19:30
What makes the results of a scientific experiment accurate? a) having multiple trials b) lacking any supporting data c) working in a lab d) using a hypothesis that is always true
Answers: 2
Biology, 22.06.2019 06:00
Explain why ecosystem diversity results in species diversity in a healthy biosphere
Answers: 3
Biology, 22.06.2019 10:30
A(n) is a molecule influences the way that a molecule reacts.
Answers: 1
Example Mechanism of evolution 1. As habitats change, populations of northern pine trees that were o...
Business, 27.07.2019 15:00
Mathematics, 27.07.2019 15:00
Chemistry, 27.07.2019 15:00
Chemistry, 27.07.2019 15:00
Social Studies, 27.07.2019 15:00
Social Studies, 27.07.2019 15:00
Biology, 27.07.2019 15:00