Phylogeny, Speciation, & Origin of Life

Which piece of evidence BEST supports the endosymbiotic theory of organelle evolution?

• Mitochondria and chloroplast are the same size as present day extant bacteria.
• They divide by a process that is similar to meiosis.
• Mitochondria and chloroplast both contain DNA and can make their own proteins.

Tags

NGSS.HS-LS4-1

The two extant species that are closely related to each other are __.

• A and B
• B and C
• C and D
• D and E

Tags

NGSS.HS-LS4-1

The most precise information to use when making phylogenetic trees is...

• morphology
• molecular
• fossil
• synapomorphies

Tags

NGSS.MS-LS3-1

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. 

Tags

NGSS.MS-LS3-2

What type of speciation involves reproductive isolation?

• Allopatric
• Sympatric
• Both

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

What type of speciation involves geographic isolation?

• Allopatric
• Sympatric
• Both

Tags

NGSS.HS-LS4-5

What type of speciation involves isolation due to behavior such as sexual selection or habitat differentiation?

• Allopatric
• Sympatric
• Both

The model that predicts evolution occurs in rapid bursts followed by long periods of no change is called...

• gradualism
• punctuated equilibrium
• adaptive radiation
• convergent evolution 

If, like the horse, all of the transitional forms for a species are found in the fossil record, which model of evolution most likely occurred in that species?

• punctuated equilibrium
• gradualism
• adaptive radiation
• convergent evolution

The theory of Punctuated Equilibrium helps to answer...

• why there are so many species in the world today
• why there are so few transitional fossils
• why it takes so long for speciation to happen
• why speciation can happen in only some organisms