Classification and Heredity (Leaving Cert Biology): Flashcards

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Classification and Heredity
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Classification (definition)

Placing organisms into similar groups

Taxonomy (definition)

Branch of science that classifies organisms

Species (definition)

A group of organisms that can interbreed to produce fertile offspring

Variations (definition)

Differences between individuals of a species

Acquired variations (controlled by?)

Not controlled by genes

Examples of acquired variations

Speaking, riding a bike, using a computer

Inherited variations (controlled by?)

Controlled by genes

Examples of inherited variations

Number of fingers, production of hair and nails

Heredity (definition)

Passing on features from parents to offspring by genes

Gene (definition)

Section of DNA that causes production of a protein

What do genes produce?

Proteins

Many proteins produced by genes are?

Enzymes

Gene expression (definition)

Decoding genetic info in gene to produce a protein

Characteristics = ?

Heredity + Environment

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