Chapter 6

Question 1

any variation that makes an organism better suited to its environment

Answer 1

Adaptation

Question 2

the branch of biology and medicine concerned with the study of the of embryos and their development

Answer 2

Embryology

Question 3

change in inherited characteristics over time

Answer 3

Evolution

Question 4

the model that describes evolution as a slow ongoing process by which one species changes to a new species

Answer 4

Gradualism

Question 5

Human like primate that appeared about 4 to 6 million years ago, ate both plants and meat, and walked upright on two legs

Answer 5

Hominid

Question 6

Early humans that likely evolved from the Cro-Magons

Answer 6

Homo Sapiens

Question 7

inherited trait that makes an individual different from other members of the same species and results from a mutation in the organism’s genes

Answer 7

variation

Question 8

group of organisms that share similar characteristics and can reproduce among themselves producing fertile offspring

Answer 8

species

Question 9

Body parts that are similar in structure and origin, can indicate two or more species share common ancestors

Answer 9

Homologous