What is the approximate cycle time of the segmentation clock in a chick embryo, which corresponds to the formation of one new pair of somites?
Explanation
The period of the segmentation clock, and thus the rate of somite formation, varies between species. For the chick embryo, this period is specifically mentioned as being 90 minutes.
Other questions
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During gastrulation, the embryo is transformed into a multilayered structure. Which germ layer is responsible for giving rise to the entire vascular system, including the heart, blood vessels, and blood cells?
What is the term for the developmental process where a cell's potential narrows, leading it to a specific fate, such as becoming a liver cell but no longer a kidney cell?
What is the primary source of the dramatic morphological differences observed between different classes of animals, such as vertebrates and insects?
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In the vertebrate embryo, the dorsoventral (D-V) axis is patterned by a competition between which two types of secreted signaling proteins?
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What is vernalization in plants?
What is the morphogenetic process called where a population of cells rearranges by intercalating, causing the tissue to narrow along one axis and elongate along another?
What is the primary role of Myostatin, a member of the TGF-beta family, in the context of organ growth?
Which intracellular signaling pathway, primarily controlled by mechanical forces and cell architecture, is a key regulator of organ size by controlling cell proliferation and survival?
What is the primary factor accounting for the vast difference in adult body mass between a mouse and a human?
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What is endoreplication?
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In the hierarchy of Drosophila segmentation genes, which group acts first to establish coarse anterior-posterior subdivisions of the embryo?
What is the typical phenotype of a Drosophila mutant for a pair-rule gene like Even-skipped?
The Drosophila signaling proteins Wingless and Hedgehog are expressed in adjacent bands of cells within each segment. What is the nature of their interaction?
What is the consequence of artificially expressing the master transcription regulator Eyeless (or its homolog Pax6) in the leg precursors of a Drosophila?
How do C. elegans heterochronic mutants like those affecting Lin14 provide insight into developmental timing?
How is the maternal-zygotic transition (MZT), the point where the embryonic genome takes over control of development, timed in many animal embryos?
What is the primary mechanism that drives the bending of an epithelial sheet into a tube, such as during neural tube formation?
How is cell migration often guided in the embryo, for example in the case of primordial germ cells moving toward the developing gonads?
What is the role of Stem cell factor (SCF) and its receptor Kit in the development of neural crest cells?
What does the phenomenon of planar cell polarity refer to?
The evolution of pelvic spine loss in freshwater stickleback fish is a well-studied example of morphological change. What is the specific genetic basis for this change?
How many Hox gene complexes are typically found in mice and humans?
What happens in a Drosophila embryo if all the Hox genes are deleted?
What is the function of the 'Organizer' in an amphibian embryo, as demonstrated by classic transplantation experiments?
How does the negative feedback loop involving Hes genes generate the oscillations of the vertebrate segmentation clock?
In Drosophila neuroblast development, what mechanism ensures that different types of neurons are produced in a stereotyped sequence over time?
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How does the Numb protein contribute to creating different daughter cell fates during the asymmetric division of a Drosophila sensory organ precursor?
What is the primary determinant of cell size in most organisms?
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