From egg to embryo
โ Scribed by Mittwoch, Ursula
- Book ID
- 109780344
- Publisher
- Nature Publishing Group
- Year
- 1992
- Tongue
- English
- Weight
- 277 KB
- Volume
- 356
- Category
- Article
- ISSN
- 0028-0836
- DOI
- 10.1038/356671b0
No coin nor oath required. For personal study only.
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The early evolution of metazoans is a major focus of biological attention, but is the historical record revealed in the Cambrian ''explosion'' an accurate reflection of original events? The key questions concern the nature of the earliest animals and when they originated. One widely-mooted suggestio
Questions dealing with the problems of general metabolic activities during embryonic development have, until rather recently, been largely answered in terms of the activities of the egg as a whole and upon the definite assumption that such data are in themselves real indicators of the physiological