Module 10: Natural Selection & Other Mechanisms of Evolution

​Sin cambio no puede haber evolución

Multiple Choice

What do we call all of the genetic information found in a population.

Cómo llamamos a toda la información genética que se encuentra en una población.

• population

• genetic drift

• evolution

• gene pool

​Las mutaciones genéticas son esenciales para la supervivencia y evolución de las poblaciones

Multiple Choice

Mutations are a change in what?

¿Las mutaciones son un cambio en qué?

• DNA

• tRNA

• protein

• rRNA

Multiple Choice

This is the process that ultimately creates new variations and changes in DNA; leads to the creation of new alleles

Este es el proceso que finalmente crea nuevas variaciones y cambios en el ADN; conduce a la creación de nuevos alelos

• Mutation

• Microevolution

• Natural selection

• Gene flow / genetic drift

​El flujo de genes ocurre cuando los individuos entran o salen de una población. Esto generalmente resulta en una mayor variación genética.

Multiple Choice

What is gene flow?

¿Qué es el flujo de genes?

• The addition or removal of genes in a population due to individuals entering or leaving one population for another

• A change in genes frequencies when a new population arises from only a few individuals

• A reduction in population caused by natural disasters, disease, hunting, etc.

• A change in the gene pool due to chance

Multiple Choice

Genetic drift is driven by chance, not natural selection

La deriva genética es impulsada por el azar, no por la selección natural

• true

• false

Multiple Choice

If a trait HELPS an organism survive, what may happen to it?

• It dies and its DNA is not passed on

• It changes its traits to adapt and survive

• It survives and its DNA is passed on

Multiple Choice

The _________________ _________________ occurs when there is a reduction in population due to natural disasters, over hunting or disease.

• founder effect

• gene flow

• bottleneck effect

• genetic drift

Multiple Choice

What does the image represent?

• Gene flow

• Gene drift

• Mutation

• Adaptation

Multiple Choice

A virus killed most of the seals in the North Sea (e.g. dropped the population from 8000 to 800).  In an effort to help preserve the species, scientists caught 20 of the remaining seals and used them to start a new population in the northwest Pacific Ocean.  Which of the following statements would accurately describe the new   population?  

• The new seal population is genetically less diverse than the original population 

• The new seal population is genetically more diverse than the original population

• There is equal genetic variety compared  to the original population 

• None of the answers