Science resit- Species

Notes on species

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Species

A species is a group of organisms which can interbreed to produce fertile offspring

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Asexual

Organisms such as bacteria reproduce asexually.

Asxual reproduction is where an organism reproduces by making a copy of itself.

There is no interbreeding so they do not fit the definition of a species.

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Hybrids

If you interbreed a male from one species with a female of another species you'll get a hybrid.

DIFFICULT TO CLASSIFY AS THEY ARE USUALLY INFERTILE- not a new species.

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Evolution

Organisms change and evolve overtime- this means the way that they are classified may also have to change.

Sometimes the organism may change that much a new species will form (difficult to tell when this happens.)

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Binomial system

Gives everything a two part name

 

Two part latin name made form the genus and the species

Homo- sapiens (human)

Scientists all over the world use the same name due to the Binomical system therefore there is no confusion.

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Recent common ancestors

Closely related in evolutionary terms.

Often look very alike and tend to live in similar habitats.

Not always the case- may look very different due to adaptation as they live in different habitats (camels and llamas.)

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