ScienceJohn Michels (Journalist) 1942 |
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Page 366
... cells which constitute a plant all derived through division from the originat- ing cell . The Weismannian conception that qualita- tive nuclear divisions during ontogeny result in a progressive simplification of the nuclear content of ...
... cells which constitute a plant all derived through division from the originat- ing cell . The Weismannian conception that qualita- tive nuclear divisions during ontogeny result in a progressive simplification of the nuclear content of ...
Page 367
... cells originate as elements of a group which is marked by the capacity of its cells to divide , it is conceivable that in such a group cells might be formed which , destined to become differentiated , can not themselves divide . However ...
... cells originate as elements of a group which is marked by the capacity of its cells to divide , it is conceivable that in such a group cells might be formed which , destined to become differentiated , can not themselves divide . However ...
Page 368
... cells or tissues , or the abscission of a leaf , bud or branch . An effective external stimulus is most frequently a wound or a development , hormonal or other , conse- quent upon wounding . The resultant proliferation may involve cells ...
... cells or tissues , or the abscission of a leaf , bud or branch . An effective external stimulus is most frequently a wound or a development , hormonal or other , conse- quent upon wounding . The resultant proliferation may involve cells ...
Contents
G Smithsonian Institution and International | 9 |
pAminobenzoic F H JOHNSON 104 Nicotinic | 16 |
E Industrial Organization 648 | 24 |
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