a + a = black (self color)
a + at = bi-color (tan point)
a + as = black and tan (saddle)
a + aw = sable (agouti)
at + a = bi-color (tan point)
at + at = bi-color (tan point)
at + as = black and tan (saddle)
at + aw = sable (agouti)
as + a = black and tan (saddle)
as + at = black and tan (saddle)
as + as = black and tan (saddle)
as + aw = sable (agouti)
aw + a = sable (agouti)
aw + at = sable (agouti)
aw + as = sable (agouti)
aw + aw = sable (agouti)
Ay - 貂色(显性遗传)
aw - 狼青
as - 黑背
at -铁包金
a - 隐性黑 基因强弱由强到弱依次是,
左图不带 Em 基因,右图带 Em 基因,带黑面基因的狗,口吻,面部、耳部、背部、尾部及四肢会有部分黑毛发。
同是黑面,为什么同一窝的犬有的比较黑?
因为Em 基因是显性基因,E段基因有3种类型,Em、E、e。动物基因都是一对的,所以黑面的犬有一下三种类型。 EmE - one mask gene, one normal extension gene Eme - one mask gene, one recessive red gene EmEm - two mask genes。双基因面部比单基因的黑。
看过了,有个疑问
a + a = black (self color)
a + at = bi-color (tan point)
a + as = black and tan (saddle)
a + aw = sable (agouti)
at + at = bi-color (tan point)
at + as = black and tan (saddle)
at + aw = sable (agouti)
as + as = black and tan (saddle)
as + aw = sable (agouti)
aw + aw = sable (agouti)