Charles Darwin went on a five year voyage aboard the _____.
Structures that are shared by related species and that have been inherited from a common ancestor are called _____ structures.
Similar patterns of ______ development provide further evidence that organisms have descended from a common ancestor.
Lamarck suggested that individual could pass _____ traits on to their offspring.
Members of a population must _____ to obtain food, living space, and other limited necessities of life.
The french naturalist _______ suggested that organisms could change during their lifetimes by selectively using or not using various parts of their bodies.
In ______ selection, nature provides the variation, and humans select those they find useful.
_____ holds that the geological processes we see in action today must be the same ones that shaped Earth millions of years ago.
_____ describes how well an organism can survive and reproduce in its environment.
The process of change over time is called ______.
_____ genes help determine the head to tail axis in embryonic development and in vertebrates direct the growth of front and hind limbs.
Variation within a species increases the likelihood the species will survive environmental _____.
______ dating indicates the Earth is about 4.5 billion years old.
Darwin noticed that different yet related animal species often occupied different ____ within a local area.
The preserved remains or traces of ancient organisms.
A/An _____ structure is a structure that is inherited from ancestors but has lost much or all of its original function.
According to the principle of common descent, all species living and extinct are descended from ancient common ______.
The difference between individual in a species is called ______.
______ selection is the process by which organisms with variations most suited to their local environment survive and leave more offspring.