Evolution

Question 1

Species

Answer 1

A group of Organisms that can interbreed to produce fertile offspring

Question 2

Mutations

Answer 2

A change in the DNAs sequence

Question 3

Random fertilisation

Answer 3

The random union of a sperm and egg during sexual reproduction

Question 4

Natural selection

Answer 4

Organisms that are better adapted to suit their environment are more likely to survive to pass on their successful ganes

Question 5

Evolution

Answer 5

the change in characteristics of a species over time due to natural selection

Question 6

Selection pressure

Answer 6

Any environmental factors that influence natural selection

Question 7

Fossil records

Answer 7

Collection of all fossils ever discovered documenting the history of life on Earth

Question 8

Homologous structures

Answer 8

A trait or organ in different species that shares a common ancestry. They provide evidence of common ancestry. E.g Forearms of humans, bats and whales

Question 9

Vestigial structures

Answer 9

Body parts or traits that have lost their original function through evolution.

Question 10

Variation

Answer 10

differences in traits (characteristics) among individuals within a population of the same species.

Question 11

Over population

Answer 11

Species reproduce but there are more offspring produced than the amount of resources available

Question 12

Survival of the fittest

Answer 12

Organisms with favourable traits are more likely to survive and reproduce

Question 13

Struggle to exist

Answer 13

The competition among species for limited resources

Question 14

Inheritance of sucessful genes

Answer 14

Organisms that have survived to reproduce pass on successful genes to next generation

Question 15

Change in gene frequencies

Answer 15

Changes in frequencies of alles over time