「清晰」是什麼意思？
該動物不攜帶突變。就不會發展成這種疾病 並且不會傳遞下去。
馬 栗子變種 Ea（擴展 ea）
The Chestnut Variant Ea (Extension Ea) DNA test in horses is essential for breeders aiming to determine coat color genetics accurately. This genetic test identifies the presence of the Ea allele, which influences the extension gene responsible for red pigment production. Understanding the Chestnut Variant Ea helps predict coat colors like chestnut and sorrel, aiding in selective breeding decisions. Accurate DNA testing ensures better management of breeding programs and enhances the value of offspring. The Extension Ea test is quick, reliable, and widely used in equine genetics today. By incorporating this test, breeders can achieve desired coat colors and maintain genetic diversity. Stay ahead in horse breeding with the Chestnut Variant Ea DNA test.
縮寫 ： extension ea
分析突變： MC1R c.250G/A
繼承： 體染色體隱性遺傳
縮寫詞
extension ea
觀察頻率
臨床分類
毛髮相關特徵
分析突變
MC1R c.250G/A
p.(D84N)
p.(D84N)
繼承方式
體染色體隱性遺傳 （完全的）
備用名稱：
E Locus
測試總結：
The Chestnut Variant Ea (extension ea) in horses is a specific genetic marker that influences coat color. This variant affects the production of red pigment, resulting in chestnut or sorrel-colored coats. DNA testing for the Ea allele helps breeders predict and select desired coat colors in their horses. Understanding this gene is important for managing breeding programs and maintaining color consistency. Overall, the Chestnut Variant Ea plays a key role in equine coat color genetics.
可從包裝中取得： Standard
我們的包裝中已包含此 DNA 測試 Standard — 也是包包的一部分 Standard, Advanced, Complete。
查看 DNA 測試包 →選擇最適合您的動物繁殖或健康策略的包裝。
Understanding the Chestnut Variant Ea (Extension ea) in Horses
The Chestnut Variant Ea, also known as the extension gene, is a specific genetic condition that affects the coat color of horses. This variant plays a crucial role in determining the presence of red pigment in the horse's coat, which is responsible for the chestnut coloration. Understanding this gene is essential for breeders and owners who wish to predict coat color outcomes in their horses.
The Genetic Basis of the Chestnut Variant Ea
The Chestnut Variant Ea is an allele at the Extension locus (E) on the horse's genome. This gene influences the production of pheomelanin, the pigment that gives rise to red and chestnut coat colors. Horses with at least one dominant E allele will express black or bay colors, while those that are homozygous for the recessive ea allele exhibit the chestnut coloration. This genetic trait is inherited in a Mendelian fashion, meaning that it can be passed down from parents to offspring in predictable patterns.
Clinical Significance of the Chestnut Variant Ea
While the Chestnut Variant Ea primarily affects coat color, it does not have direct implications for the horse's health or performance. However, understanding this genetic variant is significant for breeding practices, as it allows breeders to make informed decisions regarding color genetics in their breeding programs. Knowledge of this variant can help breeders avoid unexpected color outcomes in foals and can also influence the market value of horses based on their coat color.
Implications for Breeding and Color Prediction
Breeders can utilize the information regarding the Chestnut Variant Ea to strategically pair horses in order to achieve desired coat colors in their foals. For instance, if a breeder aims to produce chestnut offspring, they can select mates that carry the ea allele. This genetic insight enhances the ability to predict and control coat color outcomes, which can be an important factor for certain buyers and enthusiasts in the equine market.
結論
The Chestnut Variant Ea (extension ea) is an important genetic marker in horses that influences coat color, particularly the chestnut hue. By understanding the inheritance patterns of this variant, horse owners and breeders can make informed decisions that not only cater to aesthetic preferences but also contribute to the advancement of breeding practices. While it does not affect the horse's overall health, this genetic knowledge enhances the breeding process, allowing for greater predictability and satisfaction in horse ownership.
被認可參加測試的品種： 栗子變種 Ea（擴展 ea）
- Belgian Draft
🧬 Interpretation of genotypes extension ea
基因型
地位
🟡 E/E
非營運商 - 無影響
🟡 E/ea
營運商 - 無影響
❌ ea/ea
Affected - Chestnut
常見問題：理解解釋
「航母」是認真的嗎？
不會。該動物通常是健康的，但可以將突變傳播給它的 後代。
如果動物「受到影響」怎麼辦？
它攜帶兩個突變的副本。預計臨床症狀取決於 這種疾病。它不應該被培育。
為什麼男性/女性之間會有差異？
有些疾病與性別有關，因此其表現因性別而異 動物的性別。
預測後代
E/E （%e9%9d%9e%e6%89%bf%e9%81%8b%e4%ba%ba）
E/ea （載體）
ea/ea （做作的）
DNA 測試常見問題解答
這個 DNA 測試檢測到什麼？
This DNA test detects the mutation associated with Chestnut Variant Ea (extension ea) in order to identify clear, carrier, or at-risk animals.
為什麼要測試繁殖動物？
DNA 測試有助於飼養員計劃更安全的交配並降低將突變傳播給後代的風險。
這個測試的繼承模式是什麼？
此測試報告的遺傳模式是體染色體隱性遺傳。
此測試分析哪一種突變？
This test analyses the mutation MC1R c.250G/A.
攜帶動物是否必然受到影響？
未必。解釋取決於遺傳模式和產生的基因型。
參考
Wagner H J, Reissmann M. New polymorphism detected in the horse MC1R gene. Anim Genet. 2000 Aug;31(4):289-90. doi: 10.1046/j.1365-2052.2000.00655.x.