Quiz 2 key - of organisms based on common ancestry?...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Quiz 2 1. What are the two fundamental concepts of the theory of evolution? a. Species change over time b. Species are related through descent from a common ancestor 2. What are homologous structures? How are they different from analogous structures? a. Homologous structures are derived from the same body part of a common ancestor. (bat wings, whale fin, human arms, etc.) b. Analogous structures are structures that have evolved independently (no common ancestor) to serve similar functions in similar conditions (bird and bat wings) 3. What was the cause of the finch population beak size going from small to large? Change in the environment, rainfall, climate, etc. 4. What is the hypothetical model that scientists use to reconstruct evolutionary history
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: of organisms based on common ancestry? Phylogeny 5. How are eyes of cavefish (that live in the dark) an example of evolution? The are an example of a vestigial trait. Cavefish cannot see and therefore do not use their eyes, but it is evidence that at one time their ancestor had eyes and could see. 6. D E C B G F A Paraphyletic grouping 7. 2 Arms & Legs Warm Blood Hair Feathers Fish (outgroup) Amphibians 1 Mammals 1 1 1 Birds 1 1 1 0=N 1=Y 0=N 1=Y 0=N 1=Y 0=N 1=Y 2 arms & legs Fish Amphibians Birds Warm blood Mammals Feathers Hair...
View Full Document

Page1 / 2

Quiz 2 key - of organisms based on common ancestry?...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online