When does the process of cleavage in the fertilised egg of humans start?

Starts in uterus when the zygote attaches itself to the uterus wall

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Starts at the blastocyst stage

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Starts when egg is in the fallopian tube

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Starts at the foetal stage

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Solution

The correct option is C Starts when egg is in the fallopian tube
The ovum is fertilised by the sperm in the fallopian tube of the female leading to the formation of a zygote. The mitotic division starts as the zygote moves through the isthmus of the oviduct. This division is called cleavage, and it results in 2, 4, 8, and then 16 daughter cells called blastomeres.

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Similar questions

Cleavage in the fertilised egg of humans

(a) Explain the term 'fertilisation'. Describe the process of fertilisation in human beings.

(b) Draw a labelled diagram to show the fertilisation of a human egg by a sperm to form a zygote.

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