Animal Development

Embryonic Development

Once the egg has been ___, it needs to ___ in cell number to develop into a ___ organism. It does this through ___

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NGSS.HS-LS1-4

Embryonic Development

This series of mitotic cell divisions from ___ --> embryo is called ___

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NGSS.HS-LS1-4

morula - solid ___ of ___ result of early ___ takes about 96 hours

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NGSS.HS-LS1-4

blastula - ___ ball of ___ day ___ of development

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NGSS.HS-LS1-4

gastrula - once the ___ reaches several ___ cells, the ___ indents and becomes 3-layered (germ layers)

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NGSS.HS-LS1-4

Embryonic Development

___ (n) + ___ (n) --> ___ (2n) --> ___ --> ___

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NGSS.HS-LS1-4

gastrula -

a. ___ - inner layer

b. ___ - outer layer

c. ___ - middle layer

differentiation -

the changing of ___ cells into 210 different types of cells, ___, organs

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NGSS.HS-LS1-4

differentiation -

occurs during ___ phase; when the cells become “___”

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NGSS.HS-LS1-4

In differentiation, the

endoderm becomes ___, pancreas, lining of ___

mesoderm becomes ___, skeleton, ___ system

ectoderm becomes ___, ___ system, hair, nails

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NGSS.HS-LS1-2

NGSS.HS-LS1-4