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==Key Stage 3==
===Meaning===
An [[embryo]] is the name given to an offspring after [[conception]] but before all the [[Cell (Biology)|cells]] have specialised and it takes on the distinct [[feature]]s features of the [[animal]].
===About Human Embryos===
|[[File:Embryo3.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |After [[fertilisation]] the [[ovum]] [[Cell Division|divides ]] into two [[Cell (Biology)|cells]], then four [[Cell (Biology)|cells]].
| style="height:20px; width:200px; text-align:center;" |This [[embryo]] has many [[Cell (Biology)|cells]] that have not yet been given a specific job.
| style="height:20px; width:200px; text-align:center;" |The [[Cell (Biology)|cells]] in this [[embryo]] are being assigned specific jobs as it starts to look more like a [[human]].
|}
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/0008158754/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158754&linkCode=as2&tag=nrjc-21&linkId=27ad53b0283feeff7fc5ae04a9e205f258 ''Embryo, pages 13, 26, 202, 211-213, 258, 309, GCSE Biology; Student Book, Collins, AQA '']
:[https://www.amazon.co.uk/gp/product/0008158754/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158754&linkCode=as2&tag=nrjc-21&linkId=27ad53b0283feeff7fc5ae04a9e205f259 ''Embryo, screening pages 213, 258-9, GCSE Biology; Student Book, Collins, AQA '']
====Edexcel====
:[https://www.amazon.co.uk/gp/product/1292120207/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120207&linkCode=as2&tag=nrjc-21&linkId=22455ff53961978667722edaa64c0be5 ''Embryo, page 8, GCSE Biology, Pearson, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Embryo, page 8, GCSE Combined Science, Pearson Edexcel '']