TRISOMIC AND HAPLOID EMBYROS OF THE CHICK (GALLUS DOMESTICUS)
نویسندگان
چکیده
منابع مشابه
Optics of cone photoreceptors in the chicken (Gallus gallus domesticus)
Vision is the primary sensory modality of birds, and its importance is evident in the sophistication of their visual systems. Coloured oil droplets in the cone photoreceptors represent an adaptation in the avian retina, acting as long-pass colour filters. However, we currently lack understanding of how the optical properties and morphology of component structures (e.g. oil droplet, mitochondria...
متن کاملMaturation of the homeothermic response of heart rate to altered ambient temperature in developing chick hatchlings (Gallus gallus domesticus).
On the basis of evidence showing that instantaneous heart rate (IHR) of chick hatchlings responds to exposure to altered ambient temperature (Ta; Tazawa H, Moriya K, Tamura A, and Akiyama R. Comp Biochem Physiol A 131A: 797-803, 2002), we elucidate here the developmental timeline for the homeothermic response of HR in newly hatched chicks (days 0-7) maintained at room temperature ( approximatel...
متن کاملLampbrush chromosomes of the chicken, Gallus domesticus
We examined lampbrush chromosomes (LBC) prepared from chicken oocytes of 1-3-mm diam using both light and electron microscopy. Both macro- and microchromosomes form LBC with morphologies very similar to the well known newt and salamander LBC. In chicken LBC typical loops have a contour length of approximately 15 microns, although some loops range up to 50 microns. Multiple transcription units a...
متن کاملFunctional development of the hypothalamo-hypophyseal-adrenal cortex axis in the chick embryo, Gallus domesticus.
Basal plasma levels of corticosterone increased gradually during the second half of incubation, reaching a peak around the time of hatching. Stress resulted in a very significant elevation of corticosterone above the basal level in embryos 16 days or older, but not in younger embryos. Newly hatched chicks did not respond to stress, but a typical stress response was evident one week after hatchi...
متن کاملSocial dominance and personality in male fowl (Gallus gallus domesticus)
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ژورنال
عنوان ژورنال: Reproduction
سال: 1968
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.0170215