Evolution Chapter 13 homework pt1

Identify the key components, inherent assumptions, and drawbacks for Phylogenetic species concept

• Defines species by morphological characteristics

• Defines species as a group that possesses distinguishing characteristics from other groups

• Does not work well if there is high morphological variation in a species

• Only applies to species that reproduce sexually

• Requires interbreeding individuals

Identify the key components, inherent assumptions, and drawbacks for biological species concept

• Only applies to species that reproduce sexually

• Requires interbreeding individuals

• Defines species as a metapopulation that exchanges alleles and shares an evolutionary lineage

• May group morphologically different populations as the same species

• Defines species by morphological characteristics

Identify the key components, inherent assumptions, and drawbacks for General Lineage species concept

• Defines species as metapopulations that exchange alleles and shares an evolutionary lineage

• May group morphologically different populations as the same species

• Requires interbreeding individuals

• Does not work well if there is high morphological variation in a species

• Only applies to species that reproduce sexually

Identify which species concept would be most appropriate for each scenario.

Suppose a paleontologist is studying dinosaur fossils from the Cretaceous period. Which species concept should the researcher use?

• Phylogenetic species concept

• Biological species concept

• General Lineage species concept

Identify which species concept would be most appropriate for each scenario.

Suppose an ecologist is studying the speciation of two groups of ground squirrels that live on either side of the Grand Canyon. Which species concept should the researcher use?

• Biological species concept

• Phylogenetic species concept

• General Lineage species concept

Identify which species concept would be most appropriate for each scenario.

Suppose a biologist is studying gene flow within metapopulations of triggerfish that live in the coral reefs of Thailand. Which species concept should the researcher use?

• General Lineage species concept

• Biological species concept

• Phylogenetic species concept

Each example describes a barrier that keeps a pair of species separated in the wild. Identify whether each barrier is an allopatric or reproductive barrier.

Lions and tigers live on different continents. In zoos, they can breed and produce ligers and tigons. Is this an example of an allopatric or reproductive barrier?

• Allopatr9c

• Reproductive

Each example describes a barrier that keeps a pair of species separated in the wild. Identify whether each barrier is an allopatric or reproductive barrier.

Kaibab squirrels occupy the north rim of the Grand Canyon while Abert squirrels live on the south rim of the Grand Canyon. Is this an example of an allopatric or reproductive barrier?

• Allopatric

• Reproductive

Each example describes a barrier that keeps a pair of species separated in the wild. Identify whether each barrier is an allopatric or reproductive barrier.

The males of different firefly species flash unique patterns to attract females. The females are only attracted to particular light sequences. Is this an example of an allopatric or reproductive barrier?

• Allopatric

• Reproductive

Each example describes a barrier that keeps a pair of species separated in the wild. Identify whether each barrier is an allopatric or reproductive barrier.

The red‑legged frog and bullfrog both live in aquatic habitats in California. However, red‑legged frogs prefer to perform courtship rituals in streams, whereas bullfrogs prefer to perform courtship rituals in ponds. Is this an example of an allopatric or reproductive barrier?

• Allopatric

• Reproductive