Speciation

What type of speciation involves geographic isolation?

• Allopatric
• Sympatric
• Both

Tags

NGSS.HS-LS4-5

What type of speciation involves reproductive isolation?

• Allopatric
• Sympatric
• Both

Which type of speciation occurred when a few finches were blown from the coast of South America to the Galapagos Islands and then evolved into 14 different finch species?

• Allopatric
• Sympatric

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

NGSS.HS-LS4-1

Which type of speciation occurred when maggot flies living on harthorns began to feed on apples?

• Allopatric
• Sympatric

Tags

NGSS.HS-LS4-5

What is a species?

• A group of organisms that can mate with each other and produce fertile offspring. 
• A group of organisms that genetically are very different from each other. 
• A group of organisms that can mate and produce offspring even if those offspring are infertile.
• Indivual organisms that live in the same environment. 

What is geographic isolation?

• Members of a population live together within an geographic boundary
• Members of a population may become isolated from one another by geographic boundaries
• An isolation that is geographic
• None of these

Tags

NGSS.MS-LS4-4

NGSS.MS-LS2-4

What is allopatric speciation?

• Occurs when a physical barrier divides one population into two or more populations
• Occurs when a reproductive barrier divides one population into two or more populations
• Occurs when species evolve into a new species without a physical barrier
• Occurs when species into into a new species at random

Tags

NGSS.HS-LS4-4

What is genetic drift?

• The movement of genes in/out of a population
• A small, random change in the DNA
• Any change in the allelic frequencies in a population that is due to chance
• ›The process in which humans select for or against particular features in organisms

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

Tags

NGSS.HS-LS4-4

What type of selection is this?

• Directional Selection
• Stabilizing Selection
• Disruptive Selection
• Natural Selection

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2