Ground Plan
Mostrando 25-29 de 29 artigos, teses e dissertações.
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25. Reproductive ground plan may mediate colony-level selection effects on individual foraging behavior in honey bees
The colony-level phenotype of an insect society emerges from interactions between large numbers of individuals that may differ considerably in their morphology, physiology, and behavior. The proximate and ultimate mechanisms that allow this complex integrated system to form are not fully known, and understanding the evolution of social life strategies is a m
National Academy of Sciences.
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26. Developmental rescue of Drosophila cephalic defects by the human Otx genes
The molecular mechanisms of head development are a central question in vertebrate and invertebrate developmental biology. The anteriorly expressed homeobox gene otd in Drosophila and its homolog Otx in mouse are required for the early development of the most anterior part of the body, suggesting that a fundamental genetic program of cephalic development migh
The National Academy of Sciences.
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27. Molecular phylogeny of the insect order Hymenoptera: apocritan relationships.
Phylogenetic relationships among the major groups of hymenopteran insects were investigated by using comparative sequence information from the mitochondrial 16S rRNA gene. The placement of the ectoparasitic Stephanidae as the sister group to the remaining Apocrita confirmed ectoparasitism as the ground plan biology for the Apocrita. Endoparasitism evolved at
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28. Almond Harvesting, Processing, and Microbial Flora
This survey was set up on a statistical sampling plan to determine the microbial quality of almonds as they are received at the processing plant. The total aerobic bacterial count and yeast and mold count distribution were skewed by a few high counts compared with the majority of relatively low counts. Hard shell varieties of almonds had lower counts than di
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29. Allopolyploidization and evolution of species with reduced floral structures in Lepidium L. (Brassicaceae)
Understanding the pattern of speciation in a group of plants is critical for understanding its morphological evolution. Lepidium is the genus with the largest variation in floral structure in Brassicaceae, a family in which the floral ground plan is remarkably stable. However, flowers in more than half of Lepidium species have reduced stamen numbers, and mos
National Academy of Sciences.