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01074_Text_GCSE Activity Window Template.txt
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1999-02-05
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702b
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18 lines
A revolution in the making. . .
1. a) What are the main components of egg white and yolk?
b) Test each part for protein using the Biuret test.
2. a) Put the following stages in egg development in the order which they occur:
Differentiation Cleavage Growth Morphogenesis.
b) Which of the stages above are mainly associated with:
i) Mitotic division of the zygote.
ii) Development of organs.
iii) Division of specialised cells.
iv) Development of muscle, nerve cells etc.
3. Why was Geoffroy's idea originally mocked, but now may be correct?
4. Why do scientists think that the process of genetic control is possibly a wave and not a simple concentration gradient?