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GCSE Biology > Genetics > Flashcards

Genetics Flashcards

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0
Q

What controls the development of different characteristics?

A

Genes.

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1
Q

How many chromosomes do most cells have?

A

23 pairs

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2
Q

What makes up a gene?

A

A double helix of DNA

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3
Q

What are the different types of the same gene called?

A

Alleles.

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4
Q

What is an allele?

A

A different form of a gene.

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5
Q

What sort of reproduction produces genetically different cells?

A

Sexual

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6
Q

What is sexual reproduction?

A

When genetic information from two organisms are combined to produce genetically different offspring

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7
Q

What are gametes?

A

The sex cells that fertilise together in sexual reproduction.

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8
Q

How many chromosomes are in a gamete?

A

23 chromosomes.

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9
Q

What is fertilisation?

A

When the egg and sperm cell fuse together.

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10
Q

What sort of reproduction produces genetically identical cells?

A

Asexual

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11
Q

What are offspring of mitosis like?

A

They’re genetically identical to their parents and siblings.

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12
Q

When is mitosis used?

A

Growth
Repair
Asexual reproduction

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GCSE Biology (12 decks)

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