Keywords B1

Created by: eloise
Created on: 15-04-13 11:53

Characteristics

Feature or quality used to identify or classify an organism.

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Validate

Prove theory by collecting supporting evidence... investigate, collect samples, share with other scientists (peer review)

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Variation

Differenciating characteristics within a species.

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Species

A group of the same organism which can interbreed to produce fertile young.

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Speciation

Formation of a new species due to geographical isolation, evolving differenciating characteristics, until interbreeding is no longer possible.

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Cystic Fibrosis

Genetic disorder caused by the inheritance of two recessive alleles... causes build up of mucus in lungs, suseptability to chest infection, problems with digestion, shortness of breath.

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Evolution

The developmment of a new species over time through a process of repeated natural selection.

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Recessive allele

Version of a gene that will only have an effect if the other allele is also recessive.

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Genotype

the alleles of a particular gene possessed by an organism.

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Cystic Fibrosis

Genetic disorder caused by the inheritance of two recessive alleles... causes build up of mucus in lungs, suseptability to chest infection, problems with digestion, shortness of breath.

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Heterozygous

When both alleles possessed are different.

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Sickle Cell

Caused by the inheritance of two recessive alleles. Effects triggered by dehydration and tiredness. Cannot absorb so much oxygen due to distorted red blood cell shape. Causes joint pain, respiration, weakens immune system.

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