1						2			3						4
			5
					6																						7
											8
9
		10
											11
	12												13
																					14
15
					16
													17
																								18
																			19
	20
													21
							22

Across 6. The set of observable characteristics of an individual resulting from the interaction of its genotype with the environment 8. When organisms change over time, so modern organisms descended from ancient ones 9. The genetic makeup of an individual organism 10. Any genetic change in a population that is inherited over several generations 13. Two hundred million years ago (Ma), research suggests that all the continents were one large mass 15. Structures that have different mature forms but develop from the same embryonic tissue 17. A branch of biology that studies early life stages and their development 19. Inherited traits that improve an organism’s chance of survival and reproduction in a certain environment 20. Structures in different species that has similar appearance of function but have evolved separately thus do not share a common ancestor 21. The process where organisms better adapted to their environment tend to survive longer and produce more offspring 22. Any fossil which gives us information about a transition from one species to another; helps support the Theory of Evolution

Down 1. How biologists group organisms, rooted in works by Aristotle 2. To the advantage of someone or something 3. Intentional breeding of plants and animals to preserve traits that breeders want 4. Randomly occur to produce variations. Sexual reproduction also creates variations 5. Science that deals with the physical history of the Earth and the changes it is and has undergone 7. Diversity in gene frequencies between individuals or population 11. Remnants of structures that were once functional in ancestor, (now reduced in size and have little or no function) 12. The variety of life in the world, or in a specific habitat or ecosystem 14. The genetic contribution of an individual to the next generation’s gene pool 16. A theory that states the Earth’s crust is made up of a number of plates which move over a liquid crust that get created and destroyed over time 18. The branch of Science concerned with the bodily structures of humans, animals, and other living organisms