Germinal reversion of the merle allele in Australian shepherd dogs.
نویسنده
چکیده
A homozygous merle Australian shepherd bitch produced two nonmerle offspring and 64 that carried the merle allele. The two nonmerle offspring produced no merles when bred to nonmerles, indicating that the germinal reversion to nonmerle was stable. This occurrence is further evidence that the merle allele is due to a transposable DNA element.
منابع مشابه
Coat colour in dogs: identification of the Merle locus in the Australian shepherd breed
BACKGROUND Coat colours in canines have many natural phenotypic variants. Some of the genes and alleles involved also cause genetic developmental defects, which are also observed in humans and mice. We studied the genetic bases of the merle phenotype in dogs to shed light on the pigmentation mechanisms and to identify genes involved in these complex pathways. The merle phenotype includes a lack...
متن کاملDirrofilariasis in Shepherd Dogs of High Altitudes Areas in West Azerbaijan-Iran
Although the biology and ecology of the arthropod vectors are different, some factors, such as global warming, the increasing abundance of mosquitoes, the movement of domestic hosts, and the abundance of wild reservoirs, can act as favourable factors for the distribution of infections. The aim of this study was to determine the prevalence of Dirofilaria immitis infection in shepherd dogs living...
متن کاملAge-dependent electrocardiographic and echocardiographic changes in German Shepherd dogs
By causing numerous changes in the cardiovascular system, ageing leads to a decreased threshold for clinical manifestation of heart disease. The aim of this study was to define the existence of cardiac structural and functional changes in healthy dogs of different age. Radiographic, electrocardiographic (ECG) and echocardiographic examinations of 20 clinically healthy German Shepherd dogs were ...
متن کاملA genealogical survey of Australian registered dog breeds.
Breeding practices were analysed for 32 registered dog breeds representing very small registries (120 Central Asian shepherd dogs) through to very large registries (252,521 German shepherd dogs) in Australia. The vast majority (91%) of registered kennels in Australia that were sampled did not regularly employ either close breeding or popular sire usage in their kennels and the weighted mean inb...
متن کاملPrevalence of deafness in dogs heterozygous or homozygous for the merle allele.
BACKGROUND Deafness in dogs is frequently associated with the pigment genes piebald and merle. Little is known about the prevalence of deafness in dogs carrying the merle allele. OBJECTIVE To determine the prevalence of deafness in dogs heterozygous and homozygous for the merle allele of the mouse Silver pigment locus homolog (SILV) gene. ANIMALS One hundred and fifty-three privately owned ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The Journal of heredity
دوره 75 1 شماره
صفحات -
تاریخ انتشار 1984