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Biology Revision Yr 8 > Fertilisation > Flashcards

Fertilisation Flashcards

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1
Q

Fertilisation

A

Fusion of nuclei of sperm and egg in the oviduct. Creates a zygote.

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2
Q

What does each gamete contain

A

Only 23 chromosomes (DNA is halved)

After fertilisation, zygote will have 46 chromosomes

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3
Q

The zygote travels down the oviduct and…

A

Divides by mitosis to form an embryo

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4
Q

What happens after an embryo has formed?

A

The embryo travels into the uterus and implants into the thick uterus lining. Implantation. Pregnancy only successful if this happens.

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Biology Revision Yr 8 (21 decks)

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