「清晰」係咩意思？
呢隻動物唔會攜帶呢個突變。佢唔會發病 同埋唔會傳落去。
馬 Chestnut Variant Ea (extension 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
分析咗嘅突變： MC1R c.250G/A
遺產 ： 常染色體隱性
首字母縮寫
extension ea
觀察到嘅頻率
臨床分類
同外套有關嘅特徵
分析咗嘅突變
MC1R c.250G/A
p.(D84N)
p.(D84N)
繼承方式
常染色體隱性 （完成）
另一個名：
E Locus
測試摘要：
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.
喺包裝入面有得買： Standard
呢個 DNA 測試由我哋嘅包裝開始包括喺入面 Standard — 而且亦都係包嘅一部分 Standard, Advanced, Complete。
查看 DNA 檢測包 →揀最適合你嘅動物嘅繁殖或者健康策略嘅群體。
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.
測試認可嘅品種： Chestnut Variant Ea (extension ea)
- Belgian Draft
🧬 Interpretation of genotypes extension ea
基因型
地位
🟡 E/E
非載波 - 冇效果
🟡 E/ea
載體 - 冇效果
❌ ea/ea
Affected - Chestnut
常見問題：理解解釋
「承載者」係咪認真？
唔係。隻動物一般都係健康嘅，但係可以將突變傳染畀佢 後代。
如果一隻動物係「受影響」嘅話點算好？
佢有兩個突變嘅副本。預計會有臨床症狀，視乎情況而定 個病。唔應該繁殖。
點解男 / 女有分別？
有啲疾病係同性別有關，所以佢哋嘅表現會因疾病而異 動物嘅性別。
預測後代
E/E （%e9%9d%9e%e6%b5%81%e5%8b%95%e7%b6%b2%e7%b5%a1%e4%be%9b%e6%87%89%e5%95%86）
E/ea （航空公司）
ea/ea （受影響）
DNA 測試常見問題
呢個 DNA 測試可以檢測到啲咩？
This DNA test detects the mutation associated with Chestnut Variant Ea (extension ea) in order to identify clear, carrier, or at-risk animals.
點解要測試一隻繁殖動物？
DNA 檢測有助養殖者計劃更安全嘅交配，同埋減低將突變傳播畀後代嘅風險。
呢個測試嘅繼承模式係點？
呢個測試報告嘅遺傳模式係常染色體隱性。
呢個測試會分析邊個突變？
This test analyses the mutation MC1R c.250G/A.
載體動物係咪一定會受到影響？
唔一定。解釋取決於遺傳模式同所產生嘅基因型。
參考文獻
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.