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Unit 9 Vocab

Total questions: 12

Worksheet time: 9mins

Name
Class
Date
1.

________ ________ - average phenotypes have a selective advantage over extremes in either direction

(a)  

2.

__________ __________ - Structures that have no apparent function and appear to be residual parts from a past ancestor

(a)  

3.

___________ ___________ - Genes do not change in a population from generation to generation; no evolution occurs

(a)  

4.

_________ _________ - represents the incidence of a gene variant in a population

(a)  

5.

(a)   - the close external resemblance of an animal or plant (or part of one) to another animal, plant, or inanimate object

6.

(a)   - a defense or tactic that organisms use to disguise their appearance, usually to blend in with their surroundings

7.

(a)   - the early developmental stage of an animal while it is in the egg or within the uterus of the mother

8.

__________ __________ - have similar function, but not similar structure

(a)  

9.

___________ ___________ - these have similar skeletons, but not always the same functions

(a)  

10.

(a)   - It’s how a new species develops. Once a new species develops, it can no longer reproduce with the species it once was able to.

11.

_______ _______ - Collection of genes w/in a population. Members live in a specific location. Mutations can exist for generations before changing the phenotype.

(a)  

12.

___________ ___________ - the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.

(a)