Speciation. Biological Species Concept Population that can interbreed to produce viable and fertile...

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Speciation

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Transcript of Speciation. Biological Species Concept Population that can interbreed to produce viable and fertile...

Page 1: Speciation. Biological Species Concept Population that can interbreed to produce viable and fertile offspring.

Speciation

Page 2: Speciation. Biological Species Concept Population that can interbreed to produce viable and fertile offspring.

Biological Species Concept

Population that can interbreed to produce viable and fertile offspring

Page 3: Speciation. Biological Species Concept Population that can interbreed to produce viable and fertile offspring.

Eastern Meadowlark Western Meadowlark

Biological Species Concept

Cannot breed, different songs, different behaviors

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Speciation

Formation of a new species

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How does Speciation occur?

- Gene pools become separated- Populations become reproductively isolated

Reproductive Isolation

Biological barriers that prevent members from producing viable and fertile offspring

Page 6: Speciation. Biological Species Concept Population that can interbreed to produce viable and fertile offspring.

Reproductive Isolation Pre-zygotic (before the zygote)

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Habitat Isolation

2 species, 2 different habitats within same area

Rarely cross paths

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Temporal Isolation

Eastern Spotted Skunk

Western Spotted Skunk

Reproduce late winter

Reproduce late summer

Breed at different times(day/season/year)

Cannot mix gametes

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Behavioral Isolation

Courtship rituals that are uniqueto breeding success

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Mechanical IsolationMorphological

differences that prevent mating

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Gametic Isolation

Purple Sea Urchin Red Sea Urchin

Sperm of #1 not able to fertilize egg of #2Sperm cannot survive, cannot penetrate egg

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Reproductive Isolation Post-zygotic (after the zygote)

Hybrid Equine

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Zebroid or Zorse - sterile

Viable (able to survive)Infertile (not able to reproduce)

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Zedonk, Zebrass - sterile

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Offspring = Mule = sterile

Horse

Donkey

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Offspring = Hinny = sterile

Horse


Characteristics of Lifemrohonors.pbworks.com/w/file/fetch/85793965... · 2020. 7. 13. · interbreed and produce fertile offspring. If individuals in a species never reproduced, it

Characteristics of Lifemrohonors.pbworks.com/w/file/fetch/85793965... · 2020. 7. 13. · interbreed and produce fertile offspring. If individuals in a species never reproduced, it

SBI3U Ms. De Sousa. Biological Species: population where individuals are able to interbreed to produce viable offspring. Speciation occurs when there.

SBI3U Ms. De Sousa. Biological Species: population where individuals are able to interbreed to produce viable offspring. Speciation occurs when there.

Evolution. Species- group of organisms that can interbreed and produce fertile offspring. Niche- role, or position, of an organism in its environment.

Evolution. Species- group of organisms that can interbreed and produce fertile offspring. Niche- role, or position, of an organism in its environment.

Species “A species is a group of similar individual organisms that can usually breed among themselves to produce fertile offspring.” Ernst Mayr Geneticists.

Species “A species is a group of similar individual organisms that can usually breed among themselves to produce fertile offspring.” Ernst Mayr Geneticists.

mrciardullo.weebly.commrciardullo.weebly.com/uploads/2/6/8/4/26847231/05...  · Web view– a group of organisms more or less alike that can interbreed & produce fertile offspring

mrciardullo.weebly.commrciardullo.weebly.com/uploads/2/6/8/4/26847231/05...  · Web view– a group of organisms more or less alike that can interbreed & produce fertile offspring

Classification1).pdf · interbreed and produce viable, fertile offspring. Energy: autotrophic, heterotrophic, chemotrophic Internal/External skeleton: back bone, bone/cartilage Cell

Classification1).pdf · interbreed and produce viable, fertile offspring. Energy: autotrophic, heterotrophic, chemotrophic Internal/External skeleton: back bone, bone/cartilage Cell

Goal #5 Classification. I. Species = group of organisms that share similar characteristics that can breed to produce fertile offspring ~ 1.5 million different.

Goal #5 Classification. I. Species = group of organisms that share similar characteristics that can breed to produce fertile offspring ~ 1.5 million different.

Ecology. Basic Concepts Species : a group of organism that can interbreed & produce fertile offspring.(have a common gene pool). Habitat: the environment.

Ecology. Basic Concepts Species : a group of organism that can interbreed & produce fertile offspring.(have a common gene pool). Habitat: the environment.

LIFE IN THE OCEAN - Brooklyn Collegejbeatty/coresea/2018fallf/week07/7.pdf · produce viable offspring – that is to say, the offspring themselves are fertile. This is a good definition

LIFE IN THE OCEAN - Brooklyn Collegejbeatty/coresea/2018fallf/week07/7.pdf · produce viable offspring – that is to say, the offspring themselves are fertile. This is a good definition

Topic 4.1 – Species, Communities, Ecosystems Understandings Species are groups of organisms that can potentially interbreed to produce fertile offspring.

Topic 4.1 – Species, Communities, Ecosystems Understandings Species are groups of organisms that can potentially interbreed to produce fertile offspring.

What is a species? A group of organisms so similar to one another that they can breed and produce fertile offspring.

What is a species? A group of organisms so similar to one another that they can breed and produce fertile offspring.

What is Comparative Animal Central Themes of Comparative ...€¦ · actually or potentially interbreed" and produce fertile offspring! "of different species inhabiting the same place

What is Comparative Animal Central Themes of Comparative ...€¦ · actually or potentially interbreed" and produce fertile offspring! "of different species inhabiting the same place

Diversity of Life. Species Organisms that can mate and produce fertile offspring.

Diversity of Life. Species Organisms that can mate and produce fertile offspring.

Species and Speciation BIOL 1407. Biological Species Concept A group of organisms that can interbreed and produce viable, fertile offspring Photo Credit.

Species and Speciation BIOL 1407. Biological Species Concept A group of organisms that can interbreed and produce viable, fertile offspring Photo Credit.

5 Levels of Ecological Organization § Species- organisms that can interbreed and produce fertile offspring § Population- all the members of 1 species.

5 Levels of Ecological Organization § Species- organisms that can interbreed and produce fertile offspring § Population- all the members of 1 species.

Evolution and Speciation. Species A group of organisms that breed with one another and produce fertile offspring.

Evolution and Speciation. Species A group of organisms that breed with one another and produce fertile offspring.

Chapter 24 ~Macroevolution Origin of Species. What is a species? A population whose members have the potential to interbreed and produce viable, fertile.

Chapter 24 ~Macroevolution Origin of Species. What is a species? A population whose members have the potential to interbreed and produce viable, fertile.

Population Ecology: POPULATION DYNAMICS · Population Structure & Dynamics Heyer 1 • Species – Interbreed – Fertile offspring • Population – Interacting group – Share

Population Ecology: POPULATION DYNAMICS · Population Structure & Dynamics Heyer 1 • Species – Interbreed – Fertile offspring • Population – Interacting group – Share

Trashketball!. 1. A group of similar organisms that can mate with each other and produce fertile offspring A. populations B. species C. fossils.

Trashketball!. 1. A group of similar organisms that can mate with each other and produce fertile offspring A. populations B. species C. fossils.

 · 2016. 11. 27. · produce FERTILE Different breeds of DOG offspring. are still the same species. (example: a poodle can mate with a golden retriever and produce fertile offspring.

 · 2016. 11. 27. · produce FERTILE Different breeds of DOG offspring. are still the same species. (example: a poodle can mate with a golden retriever and produce fertile offspring.