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Flashcards in Module 1 Deck (93)
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1

What is life capable of?

Growth, Reproduction, Functional activity, Adaptation

2

What is a prion?

Infectious agent that causes proteins to fold up in weird ways, NOT alive

3

What are viruses?

Infectious agents that use host machinery, yet they don't respond to stimuli, NOT alive

4

What are kingdoms?

Taxonomic category of the highest rank

5

What are the 6 kingdoms?

Plants, animals, fungi, Protista, bacteria, archaea

6

What are the 3 domains?

Eukarya, Bacteria, Archaea

7

What is a species?

A group of individuals that regurlarily breed together

8

What are prokarya?

Single cells that lack membrane-bound organelles

9

What are eukarya?

Organisms whose cells have a nucleus enclosed within membranes

10

How do prokaryote get to eukaryote?

1. Acquire a nucleus
2. Acquire a mitochondria
3. Acquire chloroplasts

11

What is evolution?

Change in inherited characteristics of biological populations over successive generations

12

What is natural selection?

Non-random evolution, phenotypic variation that is heritable

13

What is selection acting upon?

Phenotypes

14

What is adaptation?

Traits that are evolved through natural selection

15

What is stabilizing selection?

Pushing everything toward the middle/mean, extreme variants are selected against
ex: birth weight

16

What is directional selection?

Selection will move in directional of favourable phenotype based on its survival in the given environment
ex: different fur colours

17

What is sexual selection?

Features of an animal whose function is not to improve survival but to maximize their reproductive success

18

What is intrasexual selection?

Individuals intimidate, deter, or defeat same-sex rivals

19

What is intersexual selection?

Individuals make themselves more attractive to the opposite sex

20

The flashy sex has greater:

Variance or skew, will evolve more elaborate traits

21

The choosy sex has greater:

Investment, therefore they are more selective about who to mate with

22

What is skew?

Tells us about the shape of distribution

23

What is the Bateman's Gradient?

The idea that whichever sex has greater variance or reproductive skew (flashy) will have a steeper Bateman's Gradient

24

What is Sexy Sons/Fisher's Runaway Selection Model?

The idea that females show a preference for a particular character, so the sons of those females will display that character and the daughters will display that preference

25

What is the Good Genes/Immunocompetence hypothesis?

The idea that some males are genetically more resistant to infections/parasites, therefore they would survive longer be less likely to affect females and their offspring

26

What is the Pre-existing sensory bias and sensory exploitation?

The idea that females have a bias for particular types of sensory stimuli, and they mate with males that produce their preferred signal

27

What is a phylogeny?

A history of organismal lineages as they change through time

28

What is a parsimony?

How to get to the pattern of trait expression in the descendants with the fewest changes

29

What is a pleiotropy?

When a single gene influences many phenotypic traits

30

What is genetic drift?

A change in frequency of an existing gene (random)