Natural Selection (Evolution)

What is the definition of "fitness"?

• ability to survive and reproduce in a specific environment

• organisms with traits well suited to their environment survive and reproduce at a greater rate

• a growing population causes a scarcity of resources

• differences in the DNA sequence

What is the definition of "variation"?

• ability to survive and reproduce in a specific environment

• organisms with traits well suited to their environment survive and reproduce at a greater rate

• a growing population causes a scarcity of resources

• differences in the DNA sequence, leading to different traits in the population

A species is an organism that has different traits and cannot _______ with other organisms.

• breed
• exist
• survive
• evolve

Tags

NGSS.MS-LS1-4

NGSS.MS-LS4-4

An original species from which all other species evolved.

• Fossil
• Natural Selection
• Descendant
• Common Ancestor

Tags

NGSS.MS-LS4-2

Formation of new species.

• Speciation
• Trait
• Fossil record
• Ancestor

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-LS4-4

____ is when members of a species that are best suited for their environment survive and reproduce at a higher rate than other members of the species

• Natural selection

• Artificial selection

• Speciation

• Adaptation

Which is necessary for speciation to occur?

• adaptation

• mass extinction

• reproductive isolation

• acquired traits

The differences among a species, like different bird beaks, are called

• theories
• variations
• adaptations
• genes

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

___ are mistakes in the DNA that cause variation within a species.

• Mutations

• Adaptations

• Speciations

• Isolations

The theory of evolution by natural selection was proposed by what scientist?

• Charles Darwin

• Albert Einstein

• Steven Hawking

• Isaac Newton