4.2 - Where do species come from?

Question 1

biological evolution

Answer 1

the process whereby earth’s life changes over time through changes in the genes of populations

Question 2

Natural selection

Answer 2

occurs when some individuals of a population have genetically based traits that enhance their ability to survive and produce offspring with the same traits.

Question 3

Fossils

Answer 3

mineralized or petrified replicas of skeletons, bones, teeth, shells, leaves, and seeds, or impressions of such items found in rocks.

Question 3

Who was natural selection proposed/proved by?

Answer 3

Proposed by Wallace
Supported with evidence from Darwin

Question 4

Fossil Record

Answer 4

The world’s cumulative body of fossils found

Question 5

heritable

Answer 5

something that can be passed from one generation to another.

Question 5

mutations

Answer 5

random changes in the structure or number of DNA molecules in a cell that can be inherited by offspring

Question 6

Adaptation/Adaptive Trait

Answer 6

any heritable trait that enables an individual organism to survive through natural selection and to reproduce more than other individuals under prevailing environmental conditions.

Question 7

Genetic resistance

Answer 7

the ability of one or more organisms in a population to tolerate a chemical designed to kill it.

Question 8

Differential Reproduction

Answer 8

enables individuals with a new trait to leave more offspring than other members of the population