Because organisms with them are more likely to survive and reproduce.

Because organisms with them have dominant alleles.

Because organisms with them have recessive alleles.

Because the trait is an acquired phenotype.

There would be a higher frequency of brown beetles in the population

There would be a higher frequency of green beetles in the population

There would be an equal amount of green and brown beetles in the population

The fur of an arctic fox turns white in winter to match the snow

An alligator snapping turtle's tonge looks like a worm, so he lures fish to his mouth

A bad tasting butterfly & a good tasting butterfly look similar, so birds don't eat either kind

Disruptive

Directional

Stabilizing

Disruptive

Directional

Stabilizing

gene flow

genetic drift

mutation

genetic drift

gene flow

genetic drift

gene flow

evolve

migrate

survive

mutate

death of the organism in which they develop

genetic variation needed for a population to evolve

benefits for the individual, not for the population

changes in genotype, but not phenotype

Changes allele frequencies

Occurs when a new population arises from only a few individuals

Can result in a loss of genetic diversity

Is caused by a disaster that kills off most individuals in a population

Overhunting of northern elephant seals

A forest fire that destroys most of a population of deer

A crop that is destroyed by blight

A small group of fish that are added to a pond

Gene Flow

Genetic Drift

a loss of genetic dicversity.

migration.

no change to allele frequency.

genetic regulation.

the homozygous dominant genotype frequency

the recessive allele frequency

the total amount of alleles in the population

a measure of fitness in the population

1 individual could have a dominant or a recessive allele.

The population is in Hardy-Weinberg equilibrium. The 1 indicates that the population has not evolved.

In terms of frequency, 1 is the highest possible number you can have.

In terms of frequency, 1 is the same as 100%. All alleles in a population added up give you 100% of the alleles.

0.6 and 0.16

0.6 and 0.4

0.4 and 0.16

0.48 and 0.36

0.09

0.07

0.7

0.9

extremely small population size

no natural selection

gene flow

nonrandom mating

natural selection

large populations

no mutations

no migration

random mating

it is evolving

it is NOT evolving

.80

.04

.32

.64

.80

.04

.32

.64

.80

.04

.32

.64

.5625

.3750

.0625

.25

.5

.04

.32

.64

.2

.8

.5625

.3750

.0625

.25

.5

.04

.32

.64

.2

.8

The population will evolve, but much more slowly than normal

The makeup of the population's gene pool will remain virtually the same as long as these conditions hold.

The composition of the population's gene pool will change slowly in a predictable manner.

Dominant alleles in the population's gene pool will slowly increase in frequency while recessive alleles will decrease.

The population probably has an equal frequency of A and a alleles.

They are at genetic equilibrium.

They have more phenotypic plasticity.

They have less genetic diversity.

They exhibit disruptive selection.

Because they are more likely to survive and reproduce.

Because they come from dominant alleles.

Because they come from recessive alleles.

Because the organism knew it needed that trait, survives, and passes it on.

0.76

0.86

0.57

0.71

0.28

0.14

0.38

0.42

no gene flow

random mating

extremely large population size

no mutations

0.04

0.16

0.4

0.8

with oxygen

without oxygen

with oxygen

without oxygen

prokaryotic

eukaryotic

muticellular

prokaryotic

eukaryotic

unicellular

Embryonic 

Natural selection 

Mimicry 

Evolution 

1

2

3

4

Fossils show how the sizes of certain animals has changed drastically over millions of years

Fossils show that some species have gone extinct

Fossils show how life forms present today are different than those from the past

Different sedimentary rock layers provide evidence for how the environment has changed over time

vestigial structures

analogous structures

homologous structures

fossil structures

structures that perform a similar function but are not similar in origin

remnants of once-important structures that have slowly lost all or most of their function

features found in different organisms that share structural similarities but may have very different functions

preserved remains of an organism

The function of these bones is the same in all animals

They live in similar environments

They have a common ancestor

All organisms resemble humans

The bones are analogous structures to the fins of living fish.

The bones are vestigial structures that had a function in an ancestor.

The bones are homologous structures to the wings of butterflies.

The bones are fossil structures from an extinct ancestor.

The organisms share a common ancestry.

The organisms belong to the same genus.

The organisms are native to the same geographic areas.

The organisms will grow into anatomically similar adults.

share a common ancestor

share a common environment

share a common population

speciation

Species I

Species II

Species III

Species IV

1

2

3