Speciation and Evolution

What is speciation?

• Old species dying out

• A species changing

• A new species forming

• Another name for evolution

Evolution is a change in _______ frequency (starts with an A)

A species inhabits the same area, but still is isolated from a similar species. This is a result of

• Allopatric Speciation

• Sympatric Speciation

• You can't tell

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 

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 

The climate of a certain area is cold, and snow is found on the ground most of the year. Equal numbers of two populations of rabbits are introduced into this climate by a group of scientists. One of the populations is brown and the other is white. Predict what will happen over several generations.

• There will be equal numbers of brown and white rabbits
• There will be more brown rabbits that white rabbits
• There will be more white rabbits than brown rabbits
• There is no way to predict what will happen to the rabbit population

Which is an example of allopatric speciation?

• Two groups of frogs breed at different times of the year

• Crows choose their mates based off of given "gifts"

• Moths choose mates based off of pheromones

• Two species of reptile are separated by an ocean

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 

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 

Alleles that improve survival will decrease in frequency in the next generation.

• True

• False