Genetic Inheritance and Genetic Crosses (LC 2026) (Leaving Cert Biology): Quizzes

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Classification and Heredity
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What is classification in biology?

Placing organisms into similar groups

What is taxonomy?

The branch of science that classifies organisms

What defines a species?

Organisms that can interbreed to produce fertile offspring

What are variations?

Differences between individuals

What controls acquired variations?

Not controlled by genes

Which is an example of an acquired variation?

Speaking

What controls inherited variations?

Genes

Which is an example of an inherited variation?

Number of fingers

What is heredity?

Passing on features from parents to offspring by genes

What is a gene?

A section of DNA that makes a protein

What are many proteins produced by genes?

Enzymes

What is gene expression?

Decoding gene info to make a protein

Are all genes always expressed?

No, not all genes are expressed

What determines characteristics?

Heredity and environment

Which is an environmental factor affecting characteristics?

Diet

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