Speciation

Let's start with your notes!

Multiple Select

Which of these leads to changes in allele frequencies (evolution) over time?

• gene flow
• genetic drift
• natural selection
• mutations

• equilibrium

Multiple Choice

What is genetic drift?

• The movement of genes into of a population that increases genetic diversity

• A small, random change in the DNA

• A change in allele frequencies in a population that is due to chance

• The process in which humans select for or against particular features in organisms

Multiple Choice

Genetic drift would have the biggest effect on which of these populations?

• The human population of India

• A large population of Mexican free-tailed bats living in central Texas

• A geographically isolated population of 5000 green tree frogs

• A small group of 12 cheetahs living in Namibia

Multiple Choice

What is the founder effect?

• Any change in the allelic frequencies in a population that is due to chance
• When a small group inhabits a new, isolated area and doesn't represent the original population

•   The process in which humans select for or against particular features in organisms
• Members of one sex choose mates with particular features

Multiple Choice

What does the picture represent?

• Founder Effect
• Mutations
• Bottleneck effect
• Gene Flow

Multiple Select

What effects can genetic drift have on a population?

• loss of genetic variation

• harmful alleles/traits more common

• reduced population size

• increase in genetic diversity

Multiple Choice

What is gene flow?

• The movement of genes into a population that increases genetic diversity

• A small, random change in the DNA

• A change in allele frequencies in a population that is due to chance

• The process in which humans select for or against particular features in organisms

Multiple Select

What effects does gene flow have on a population?

• increases population size

• keeps populations similar through their exchange of genes

• increases genetic diversity

• decreases genetic diversity

Multiple Choice

A type of natural selection that increases your ability to attract a mate is:

• Sexual Selection
• Charles Darwin
• Artificial Selection

• Variation Selection

Multiple Choice

Male bighorn sheep fighting for access to females would be an example of-

• Intersexual selection

• Intrasexual selection

Multiple Choice

Display characteristics, like a male peacock's bright feathers, helps them attract females through-

• Intersexual selection

• Intrasexual selection

Drag and Drop

Placeholder

selection is where members of one sex choose members of the ​

Placeholder

sex for mating. ​

Placeholder

selection is competition between members of the ​

Placeholder

sex for access to mates.

Drag these tiles and drop them in the correct blank above

Intersexual

Intrasexual

same

opposite

Multiple Choice

What is the definition of a species?

• a group of organisms that can interbreed but cannot produce fertile offspring.

• a group of organisms that cannot interbreed but can produce fertile offspring.

• a group of organisms that cannot interbreed and cannot produce fertile offspring.

• a group of organisms that can interbreed and produce fertile offspring.

Open Ended

What is a hybrid in biological terms?

Multiple Select

Which are examples of a hybrid?

• A zonkey

• A mule

• A monkey

• A crocodile

Multiple Choice

What is reproductive isolation?

• the mechanism that prevents two different species from interbreeding and producing viable offspring.

• the mechanism that allows two different species to interbreed freely.

• the process of mating between individuals of different species resulting in viable offspring.

Multiple Choice

What is geographical isolation?

• the separation of two populations by a physical barrier.

• the fusion of two populations of the same species.

• the process of migration between two populations of the same species.

• the result of genetic drift within a population.

Multiple Select

Which are examples of geographic isolation?

• A river dividing a population of ants into two separate groups

• A mountain range separating two populations of squirrels

• An increase in temperature affecting a species' habitat
• A mating call that is not recognizable to the opposite sex

Open Ended

Explain behavioral isolation.

Multiple Choice

Which is an example of behavioral isolation?

• Two bird species with similar mating songs
• Two bird species with different mating seasons

• Two bird species with overlapping habitats
• Two bird species with different mating songs

Multiple Choice

What is temporal isolation?

• an isolation that is only temporary

• a separation by land or sea

• a difference in breeding times or seasons

• a difference in mating calls

Multiple Choice

When separated populations cannot mate with each other this is called-

• interbreeding

• reproductive isolation

• adaptation

• mitosis mover

Multiple Choice

The lava released by a volcanic eruption separates two populations of a species of monkey. What does this represent?

• biological isolation
• geographical isolation
• temporal isolation
• anatomical isolation

Multiple Choice

Which is an example of temporal isolation?

• flowers that bloom in different months 
• birds that have different mating calls
• fruit flies that mate in different locations
• squirrels that have different fur colors

Multiple Choice

Gentoo penguins will present a mate with a pebble that they find to attract a mate. Emperor penguins have a specific call and movement that they make to attract a mate. Which type of isolation do these penguins demonstrate?

• temporal isolation 
• behavioral isolation
• geographical isolation
• anatomical isolation