Biology Evolution

According to fossil records, the horses that lived 50 million years ago were much smaller, weaker and slower than modern horses. Which process is most likely responsible for the changes that have led to the increased size, strength, and speed in horses?

• Commensalism

• inbreeding

• migration

• evolution by natural selection

Answer explanation

Natural selection is the mechanism of evolution, where animals that are more “fit” for a certain environment will naturally be selected to reproduce more often. Over time, new species have evolved from similar ancestral species.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What is this an example of?

• vestigial structures
• embryology
• homologous structures
• fossil record

Tags

NGSS.MS-LS4-2

Two organisms that are closely related would have

• very similar DNA sequence
• exactly the same DNA sequences
• no proteins in common
• completely different DNA sequence

Tags

NGSS.HS-LS3-1

The structures shown are_________

• homologous
• heterologous
• analogous
• vestigial

Tags

NGSS.MS-LS4-2

How are rats and mice related?

• They have very similar DNA sequences

• They have no proteins in common

• They have exactly the same DNA sequences

• They have completely different DNA sequences

Tags

NGSS.MS-LS4-2

What is gradualism?

• short bursts of change

• no change in the fossil record

• slow gradual changes in the fossil record

• periods of change followed by no change in the fossil record

Tags

NGSS.MS-LS4-1

DARWIN COLETED.....

• ROCKS AND WATER

• ANIMALS AND PLANTS

WHO WAS CHARLES DARWIN?

• AN ENGINEER

• AN ARCHITECT

• A GEOLOGIST

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

THE ANIMAL THAT CATCHES THE MOST OF DARWIN'S ATTENTION ON THE ISLAND.

• 
• 
• 
• 

WHAT DOES DARWIN'S THEORY SAY?

• THE ANIMAL CHANGES ON THE DIFFERENT GENERATIONS AS A RESULT OF THE ACTIONS OF THE PARENTS TO SURVIVE.

• THE CHANGES ON THE ANIMALS ARE THE RESULT OF THE NATURAL SELECTION.

Tags

NGSS.MS-LS4-4