Apakah maksud "Jelas"?
Haiwan itu tidak membawa mutasi. Ia tidak akan membangunkan penyakit ini dan tidak akan meneruskannya.
kuda Varian Chestnut E (sambungan e)
The Chestnut Variant E (Extension e) DNA test in horses is essential for breeders aiming to understand coat color genetics. This test identifies the presence of the Extension gene variant responsible for red-based chestnut coloring. By analyzing the Extension e allele, breeders can predict offspring coat colors more accurately and make informed breeding decisions. The Chestnut Variant E test is quick, reliable, and widely used in equine genetic testing. Understanding this gene helps maintain breed standards and enhances the value of your horse. For optimal breeding outcomes, include the Extension e DNA test in your genetic panel today. Accurate genetic insights lead to healthier, more vibrant chestnut horses.
Singkatan : extension e
Mutasi yang dianalisis: MC1R c.248C/T
Warisan : Autosomal Resesif
Akronim
extension e
Kekerapan diperhatikan
Klasifikasi klinikal
Sifat Berkaitan Kot
Mutasi yang dianalisis
MC1R c.248C/T
p.(S83F)
p.(S83F)
Cara pewarisan
Autosomal Resesif (Lengkap)
Nama ganti:
E Locus
Ringkasan ujian:
The Chestnut Variant E (Extension e) in horses is a specific genetic marker that influences coat color. This variant affects the production of red pigment, resulting in chestnut or sorrel coat shades. Horses with the Extension e allele typically lack black pigment in their hair. DNA testing for this variant helps breeders predict and select desired coat colors. Understanding this gene is important for accurate breeding and color identification.
Tersedia dari pek: Standard
Ujian DNA ini disertakan bermula dari pek kami Standard — dan juga merupakan sebahagian daripada pek Standard, Advanced, Complete.
Lihat Pek Ujian DNA →Pilih pek yang paling sesuai dengan strategi pembiakan atau kesihatan haiwan anda.
Introduction to Chestnut Variant E (Extension e)
The Chestnut Variant E, also known as the extension e allele, is a genetic trait found in horses that influences coat color. This variant is crucial for understanding the inheritance patterns of chestnut coloration in equines. The extension gene is responsible for the production of red pigments in a horse's coat, and its presence or absence determines whether a horse will exhibit chestnut, bay, or black coloration.
Genetic Basis of Chestnut Variant E
The extension locus (E) is located on equine chromosome 3 and plays a significant role in the pigmentation of a horse's coat. The dominant allele 'E' allows for the production of eumelanin, which is responsible for black and bay coats. Conversely, the recessive allele 'e' inhibits eumelanin production, resulting in a chestnut coat. Horses with two copies of the 'e' allele (ee) will display a chestnut coat color, while those carrying at least one 'E' allele will not.
Phenotypic Expression
While the presence of the extension e allele predominantly results in a chestnut coat color, various phenotypic expressions can occur based on other interacting genes. Factors such as sabino, roan, or varnish patterns may alter the appearance of the coat, even in horses that test positive for the extension e variant. The intensity of the chestnut coloration can also vary, with some horses exhibiting a deep, rich chestnut and others presenting a lighter, more golden hue.
Kepentingan Ujian Genetik
DNA testing for the Chestnut Variant E is essential for breeders and owners who wish to understand and predict coat color inheritance in their horses. By knowing whether a horse carries the extension e allele, breeders can make informed decisions about pairings to achieve desired coat colors in future offspring. Additionally, genetic testing can help identify potential health implications associated with specific coat color traits, allowing for more responsible breeding practices.
Kesimpulan
The Chestnut Variant E (extension e) is a key genetic marker in the study of horse coat color inheritance. Understanding this variant not only aids in predicting coat color outcomes but also enhances the overall knowledge of equine genetics. As the field of equine genetics continues to evolve, DNA testing for the extension e allele remains a valuable tool for breeders and enthusiasts alike, contributing to the responsible breeding and management of horse populations.
Baka yang diiktiraf untuk ujian: Varian Chestnut E (sambungan e)
- Arab
- Belgian Draft
- Clydesdale
- Freiberger
- Icelandic Horse
- Morgan
- Quarter Horse
- Shetland Pony
- Standardbred
- Thoroughbred
- Warmblood
- Welsh Pony
🧬 Interpretation of genotypes extension e
Genotip
Status
🟡 E/E
Bukan pembawa - Tiada kesan
🟡 E/e
Carrier - No effect
❌ e/e
Affected - Chestnut
FAQ: memahami tafsiran
Adakah "Pembawa" serius?
Tidak. Haiwan itu secara amnya sihat tetapi boleh menghantar mutasi kepada haiwan itu zuriat.
Bagaimana jika haiwan "Terjejas"?
Ia membawa dua salinan bermutasi. Tanda-tanda klinikal dijangka bergantung kepada penyakit itu. Ia tidak sepatutnya dibiakkan.
Mengapa terdapat perbezaan antara lelaki / perempuan?
Sesetengah penyakit adalah berkaitan seks, jadi ekspresi mereka berbeza-beza bergantung pada seks haiwan.
Ramalkan Keturunan
E/E (bukan-pembawa)
E/e (Pembawa)
e/e (Terpengaruh)
Soalan Lazim Ujian DNA
Apakah yang dikesan oleh ujian DNA ini?
This DNA test detects the mutation associated with Chestnut Variant E (extension e) in order to identify clear, carrier, or at-risk animals.
Mengapa menguji haiwan pembiakan?
Ujian DNA membantu penternak merancang perkahwinan yang lebih selamat dan mengurangkan risiko penghantaran mutasi kepada anak.
Apakah mod pewarisan ujian ini?
Mod pewarisan yang dilaporkan untuk ujian ini ialah Autosomal Resesif.
Mutasi manakah yang dianalisis dalam ujian ini?
This test analyses the mutation MC1R c.248C/T.
Adakah haiwan pembawa semestinya terjejas?
Tidak semestinya. Tafsiran bergantung pada corak pewarisan dan genotip yang terhasil.
Rujukan
Marklund L, Moller M J, Sandberg K, Andersson L. A missense mutation in the gene for melanocyte-stimulating hormone receptor (MC1R) is associated with the chestnut coat color in horses. Mamm Genome. 1996 Dec;7(12):895-9. doi: 10.1007/s003359900264.