منابع مشابه
Hermaphrodite cell-fate specification.
There are two sexes in C. elegans, hermaphrodite and male. While there are many sex-specific differences between males and hermaphrodites that affect most tissues, the basic body plan and many of its structures are identical. However, most structures required for mating or reproduction are sexually dimorphic and are generated by sex-specific cell lineages. Thus to understand cell fate specifica...
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While superficially simple, endosperm development is a complex, dynamic process. Cereal endosperms contain three major cell types: starchy endosperm, transfer cells and aleurone. The localized accumulation of the END1 transcript in the syncitial endosperm suggests that signals from the maternal placental tissue specify transfer cell type early. Aleurone fate is plastic and requires the continua...
متن کاملEnhancers: emerging roles in cell fate specification.
Enhancers are regulatory DNA elements that dictate the spatial and temporal patterns of gene expression during development. Recent evidence suggests that the distinct chromatin features of enhancer regions provide the permissive landscape required for the differential access of diverse signalling molecules that drive cell-specific gene expression programmes. The epigenetic patterning of enhance...
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020068:p0001 Sea urchin larvae develop from bilaterally symmetric deuterostome embryos whose basic structure is closely related to that of vertebrates. Millions of synchronously developing sea urchin embryos can be obtained by mixing gametes from a single pair of parents. The species most commonly studied develop into free-swimming pluteus larvae in about 3 days at 158C in a defined medium, sea...
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The recent identification and characterization of the Caenorhabditis elegans gene spn-4 has shed new light on the mechanisms that link embryonic polarity to the specification of cell fates.
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ژورنال
عنوان ژورنال: WormBook
سال: 2006
ISSN: 1551-8507
DOI: 10.1895/wormbook.1.39.1