Установлено точное наследование риджа Опции

[Nana]

We have just learned that the specific genetic mutation responsible for the ridge in the Rhodesian Ridgeback has been found.

The work was done by Dr. Leif Andersson at Uppsala University in Sweden in collaboration with researchers at the Broad Institute/MIT here in the U.S. and the Swedish University of Agricultural Sciences. A paper will be published in the coming months, and Dr. Andersson expects a genetic marker test to be available in the fall, pending licensure, etc.

That is all the information Dr. Andersson has given us, along with his permission to disclose it to the Ridgeback community. We know you are as thrilled as we are.

As many of you know, Dr. Mark Neff, in collaboration with RRCUS, was also searching in parallel for the same marker. While Dr. Neff's efforts were not responsible for this discovery, we all agree it is wonderful for the breed.

We are sure this will be a subject of intense interest at Dr. Bell's seminar next Wednesday at the National Specialty in Ohio, as he will be discussing the implications of a direct-marker test for breeders.
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Коротко:
Сотрудничество шведов и американцев привело к тому, что 23 мая на семинаре в Америке на Национальной выставке в Охайо будет объявлено о точном наследовании риджа и маркеровочных тестах. способных определить носителей. И т.д.

[Nana]

Было добавлено, что нет точных знаний, связывающих ДС и наличие риджа. Это только предположение, что некоторые составляющие риджа, к примеру завитки, связаны с ДС (волосы закручиваются спиралью внутрь, а не вверх). Этим также объясняется и наличие этого заболевания в других породах, которые также имеют завитки (кокеры или доберы). Также можно объяснить, почему безриджевые особи имеют иногда (реже, чем риджевые) это заболевание: они могут иметь ген (ы) , отвечающие за наследование завитков, но не риджа как такового.
Однако - всё это теория.

To be clear, nobody is saying that there is a link between dermoids and homozygosity for the ridge. There is believed to be a link between dermoids and the presence of the ridge itself.

There is one school of thought that says that some component of the ridge -- perhaps the crowns -- is connected to dermoids. (What is a dermoid, after all, but a crown that spirals downward instead of upward?) This also explains why dermoids, however uncommon, have been found on breeds that occasionally have whorling (i.e. cockers and Dobes). This also explains why ridgeless can have dermoids (though it is rare): They can inherit the gene(s) for crowns, but not the ridge gene which allows them to manifest.

This is all theory, of course