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Inheritance of colour and lethalfactors in grey Karakuls

Inheritance of colour and lethalfactors in grey Karakuls

Zuchtungskunde 32: 410-424

Genetic investigations were made on 3677 Karakul lambs born in 1953-59 at Haribes in South West Africa to grey-coloured dams. With the exception of 239 lambs sired by black rams, the lambs were all sired by grey rams. From matings of 2 grey parents the ratio of progeny was 2.99 grey: 1.01 black (expectancy 3: 1), and from a black sire and a grey dam it was 0.96 grey: 1.04 black (expectancy 1: 1). In Karakuls grey is dominant to black, and grey parents are heterozygous for colour.

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