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AQA biology 14.1 genetic variation
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- 1define the term speciesthey are capable of breeding to produce living, fertile offspring. they are similar to eachother but different from members of other species
- 2what makes them similar within a species?-similar immunological features and occupy the same ecological niche
- 3what is an organism identified by?its binomial name
- 4what are the features of this system?-universal based on latin or greek
- first (generic) name denotes genus
-second (specific) name denotes species - 5what are the rules for using the binomeal system?written in itallic or underlined
-first letter of genus in upper case, species is in lower case
-if specific name is unknown, use sp. - 6What is classification?the grouping of organisms
- 7what is taxonomy?the theory and practice of biological classification
- 8what are the two main forms of biological classification?-artificial classification
-natural classification - 9what is artificial classification?divides organisms based on their characteristics. e.g. birds and butterflies both use wings for flight however they originated in different ways
- 10what are the three characteristics of natural classification?a) based upon the evolutionary relationships between organisms and their ancestors
b) classifies species into groups using shared features derived from their ancestors
c) arranges the groups into a hierarchy in which the groups are contained within larger composite groups with no overlap - 11what is a taxon?each group in the classification
- 12what is taxonomy?the study of these groups and their positions in a hierarchical order, where they're known as taxonomic ranks
- 13what are the groups?Kingdom
Phylum
Class
Order
Family
Genus
Species - 14what is phylogeny?the evolutionary relationship between organisms
- 15what are two problems with defining species?-some species rarely is ever reproduce sexually
-species aren't fixed, but evolve and may develop into new species
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- AS - Level (unit 2 - 14. classification) AS Biology Fichas sobre AQA biology 14.1 genetic variation, creado por Charlotte Hewson el 22/04/2015.
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- Charlotte Hewson
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