Unit 4: Evolution

Question 1

What is Speciation?

Answer 1

Formation of a new species

Question 2

Behavioral Isolation

Answer 2

Happens when two populations are capable of interbreeding but have behavioral differences.

Question 3

Geographic Isolation

Answer 3

Two Populations are separated by geographic barriers

Question 4

Temporal Isolation

Answer 4

Happens when two or more species breed at different times.

Question 5

Reproductive Isolation

Answer 5

When two populations cannot interbreed and produce fertile offspring.

Question 6

Speciation of Darwin’s finches on the Galápagos Islands

Answer 6

Founders Arrive
Geographic Isolation
Changes in Gene Pool
Separate Species (Reproductive Isolation.

Question 7

Vestigial Organs

Answer 7

Organs that have no use and that don’t hurt the human

Question 8

Adaptive Radiation

Answer 8

Many related species evolved from one ancestral species

Question 9

Crossing Over

Answer 9

Produces genetic recombination

Question 10

Lateral gene transfer

Answer 10

Genes pass from one to another that don’t have the same parent

Question 11

Single Gene Trait

Answer 11

Trait that’s controlled by one gene

Question 12

Single Gene Trait Example

Answer 12

Gregor Mendel’s Pea plants

Question 13

Polygenic Traits

Answer 13

Trait controlled by two or more genes

Question 14

Polygenic Trait example

Answer 14

Blood Types

Question 15

Where does heritable change?

Answer 15

DNA Sequence