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IGCSE Biology Key Concepts > DNA and Genetics > Flashcards

DNA and Genetics Flashcards

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1
Q

What is DNA ?

A

The molecule that carries genetic information in organisms.

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2
Q

What are chromosomes ?

A

Structures made of DNA that contain genes; humans have 46 chromosomes.

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3
Q

What are genes ?

A

Segments of DNA that code for specific traits or functions.

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4
Q

What are alleles ?

A

Different forms of a gene that can result in varying traits.

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5
Q

What is a mutation ?

A

Changes in the DNA sequence that can lead to new traits or diseases.

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IGCSE Biology Key Concepts (13 decks)

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