Gallus gallus domesticus

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'Gallus gallus domesticus' can also refer to...

Gallus gallus domesticus

Gallus gallus domesticus

Responses of domestic chicks (Gallus gallus domesticus) to multimodal aposematic signals

Isolation of Microsporum gallinae from a fighting cock (Gallus gallus domesticus) in Japan

Redirected behavior in learning tasks: The commercial laying hen (Gallus gallus domesticus) as model

Lower expression of sialic acid receptors in the cecum of silky fowl (Gallus gallus domesticus Brisson) compared to white leghorn

Brief communication. A new recessive ametapodia mutation in the chicken (Gallus domesticus

Serum sexual steroid hormones and lipids in commercial broilers (Gallus domesticus) in Costa Rica

Sister chromatid exchange as an index of chromosome instability in chondrodystrophic chickens (Gallus domesticus)

Spatiotemporal mapping of the muscular activity of the gizzard of the chicken (Gallus domesticus)

Immunohistochemical localization of catecholamine biosynthetic enzymes in the adrenal gland of the domestic fowl (Gallus domesticus)

Regulation of anion transport across the uterine epithelium of Gallus domesticus 1

Are Thirty-Five Days Enough to Observe the Stress-Reducing Effect of a Semiochemical Analogue on Chickens (Gallus gallus domesticus) Housed Under High Density?

Effects of divergent selection for 8-week body weight on postnatal enzyme activity pattern of 3 fiber types in fast muscles of male broilers (Gallus gallus domesticus)

Sensitivity of Japanese Quail (Coturnix japonica), Common Pheasant (Phasianus colchicus), and White Leghorn Chicken (Gallus gallus domesticus) Embryos to In Ovo Exposure to TCDD, PeCDF, and TCDF

Quantifying the effects of genetic selection and genetic variation for body size, carcass composition, and meat quality in the domestic fowl (Gallus domesticus)

Role of the insulin-like growth factor system in epiphyseal cartilage on the development of Langshan and Arbor Acres chickens, Gallus domesticus

Changes in hepatic lipid parameters and hepatic messenger ribonucleic acid expression following estradiol administration in laying hens (Gallus domesticus)

Distribution of α-transducin and α-gustducin immunoreactive cells in the chicken (Gallus domesticus) gastrointestinal tract


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The domesticated chicken, the bird for which the most genetic information is available. Its ancestor is the Asian red jungle fowl, from which it was domesticated around 8,000 bc. Its genome size is about 1 gbp and its number of protein coding genes is ∼23,000. Birds, snakes, and lizards have two classes of chromosomes: macrochromosomes and microchromosomes. In chickens there are 10 macrochromosomes and 29 microchromosomes. The fifth chromosome in length is the metacentric Z, which occurs in duplicate in males. The female has one Z and a smaller w chromosome. The macrochromosomes including the Z replicate synchronously. All the microchromosomes replicate late and so does the w of females. Roughly 60% of all the protein coding genes in the chicken have human orthologs. The haploid chromosome number is 39. The female is the heterogametic sex (ZW), whereas the male is the homogametic sex (ZZ). There are over 200 genes that have been mapped. Estimated genome size is 1.125 × 109 base pairs. See Classification, Chordata, Aves, Galliformes; comb shape, plumage pigmentation genes, poultry breeds.

Subjects: Genetics and Genomics.

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