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As stem/root thickens, first cork cambium splits and differentiates into cork cells
As stem/root thickens, first cork cambium splits and differentiates into cork cells
Forums The Undercurrent it's literally just biology
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Weight carried by the stem activates developmental program for wood formation
Weight carried by the stem activates developmental program for wood formation
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Some developmental genes for shoot apical meristems and vascular cambium are related
Some developmental genes for shoot apical meristems and vascular cambium are related
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Developmental plasticity - ability to alter form in response to local environmental conditions, common in plants due to inability to escape adverse conditions by moving
Developmental plasticity - ability to alter form in response to local environmental conditions, common in plants due to inability to escape adverse conditions by moving
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Growth - cell division increases number of cells, but growth is brought about by cell enlargement
Growth - cell division increases number of cells, but growth is brought about by cell enlargement
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Preprophase band - ring of microtubules in the cytoplasm, predicts future plane of cell division (shortest path that will halve the volume of parent cell)
Preprophase band - ring of microtubules in the cytoplasm, predicts future plane of cell division (shortest path that will halve the volume of parent cell)
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Shape of plant organs is not solely dependent on plane of cell division (transverse vs. longitudinal divisions)
Shape of plant organs is not solely dependent on plane of cell division (transverse vs. longitudinal divisions)
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Asymmetrical cell division - one daughter cell receives more cytoplasm than the other during mitosis → generate new cell types
Asymmetrical cell division - one daughter cell receives more cytoplasm than the other during mitosis → generate new cell types
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Establishes polarity - structural/chemical differences at opposite ends of an organism (eg. movement of auxin hormone in a single direction → sets where roots/shoots grow)
Establishes polarity - structural/chemical differences at opposite ends of an organism (eg. movement of auxin hormone in a single direction → sets where roots/shoots grow)
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First cell division of a zygote is asymmetrical → establishes root/shoot axis
First cell division of a zygote is asymmetrical → establishes root/shoot axis
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Animal cells grow by synthesizing protein-rich cytoplasm, but plant cells mostly grow by taking up water (stored in large central vacuole)
Animal cells grow by synthesizing protein-rich cytoplasm, but plant cells mostly grow by taking up water (stored in large central vacuole)
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Vacuolar sap - dilute, much fewer macromolecules than in cytoplasm (“cheap”)
Vacuolar sap - dilute, much fewer macromolecules than in cytoplasm (“cheap”)
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Rigid cellulose microfibrils in cell wall force cells to expand mostly in one direction
Rigid cellulose microfibrils in cell wall force cells to expand mostly in one direction
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Morphogenesis → development of specific structures in specific locations (pattern formation)
Morphogenesis → development of specific structures in specific locations (pattern formation)
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Lineage-based - cell fate is determined early, cells pass this identity on to their progeny. Pattern is mapped according to direction of stem cell division/expansion
Lineage-based - cell fate is determined early, cells pass this identity on to their progeny. Pattern is mapped according to direction of stem cell division/expansion
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Position-based - cell fate is established late, determined by final location and signals from neighbors
Position-based - cell fate is established late, determined by final location and signals from neighbors
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Animal cell fate is largely lineage-based - Hox genes encode transcription factors that determine proper number/placement of structures
Animal cell fate is largely lineage-based - Hox genes encode transcription factors that determine proper number/placement of structures
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Having you as a Voltie would be awesome.