Mendelian Genetics - Benefits and Limitations (Leaving Cert Biology): Flashcards

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Mendelian Genetics - Benefits and Limitations
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Main use of Mendelian genetics in medicine

Predict inheritance patterns; genetic counselling

Mendelian genetics use in agriculture

Selective breeding for desirable traits

Examples of selective breeding improvements

Higher crop yields, better disease resistance

Mendelian genetics role in medical research

Develop treatments for genetic disorders

How Mendelian genetics aids evolution study

Explains inheritance & genetic diversity effects

Main limitation of Mendelian genetics

Only applies to single-gene traits

Traits controlled by multiple genes

Polygenic traits

Examples of polygenic traits in humans

Intelligence, height, hair colour

What Mendelian genetics ignores

Environmental factors interacting with genes

Environmental factors affecting gene expression

Nutrition, temperature, lifestyle

Genes located close together on same chromosome

Linked genes

How linked genes are inherited

Together as a unit, not independently

Mendel's law violated by linked genes

Law of independent assortment

Medical approach using genetic profiles

Personalised medicine

Simple Mendelian ratios in real populations

Rarely apply due to polygenic traits

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