Speciation Lesson

Speciation Lesson

Multiple Choice

If a population becomes isolated from other populations of the same species and then genetic differences start to occur, what happens?

• Competition

• Extinction

• Speciation

• Fossils form

Multiple Choice

What do we call a group of individuals that can reproduce successfully in nature?

• species

• adaptation

• speciation

Multiple Choice

A population is best described as....

• When a new species is made from an existing species

• A group of individuals in the same species

• Mating

• Ability of an organism to have children

Multiple Choice

The genitalia of the male damselfly varies in shape. Certain males can only hold onto & mate with females whose genitalia fit.  What type of reproductive barrier is this?

• behavioral isolation
• temporal isolation 
• gametic isolation
• mechanical isolation 

Multiple Choice

Some female peacocks prefer males with large, colorful tales while other female peacocks prefer males with no tail at all. Females are beginning to only mate with the type of males with the tail they prefer. What type of reproductive barrier is this?

• behavioral isolation
• hybrid sterility 
• temporal isolation
• mechanical isolation 

Multiple Choice

A flash flood carried a raft of Amazon ants away from their original population. There is enough distance between the two groups, that they will never meet in nature again. What type of reproductive barrier is this?

• behavioral isolation
• temporal isolation 
• gametic isolation
• geographic isolation 

Multiple Choice

The flowers of pink tulips open in the morning, while the flowers of lavender tulips open in the early afternoon. The bees that pollinate these tulips cannot carry pollen back & forth between the two types of tulips because of their flowers being closed at different times of day. What type of reproductive barrier is this?

• behavioral isolation
• hybrid sterility 
• temporal isolation
• mechanical isolation 

Multiple Choice

The flowers of pink tulips open in the morning, while the flowers of lavender tulips open in the early afternoon. The bees that pollinate these tulips cannot carry pollen back & forth between the two types of tulips because of their flowers being closed at different times of day. What type of isolation is this?

• Behavioral isolation

• Geographic isolation

• Temporal isolation

Multiple Choice

The emergence of new rivers or streams is a type of ____________ isolation.

• Temporal

• Behavioral

• Geographic

Multiple Choice

When reproductive barriers separate a population of a species in nature, the species no longer share a... 

• taxa
• gene pool 
• phylogenetic tree
• species 

Multiple Choice

The change in the genetic make up of a population is called...

• Population
• Random mating
• Evolution
• None of these

Multiple Choice

What is founder effect?

• Any change in the allelic frequencies in a population that is due to chance
• ›A small sample of a population settles in a location separated from the rest of the population
•   The process in which humans select for or against particular features in organisms
• ›Members of one sex choose mates with particular features