Cross-Breeding
Found in 212 Collections and/or Records:
Notes relating to crossing experiments with Paramecium, 1964-1965
Contains notes regarding crossing experiments with Paramecium. The back of the bound pages contain longhand notes on heredity, gene action, antigen variation in variety 1 of Paramecium aurelia, nuclear and cytoplasmic determinants of hereditary characters in Paramecium aurelia.
Percheron-Shetland First-Cross at 2 Years Old, 1870s-1930s
Photograph of a Percheron-Shetland first-cross horse at 2 years old standing in a paddock in [Argentina] in 1904. Image from 'the author's' book 'Argentine Shows and Live Stock 1904.'
Performance of crossbred sheep from a synthetic dam line, 1979
Located in A.B.R.O. Reprints 1979. Volume 13 of 19.
Performance of lambs from three crossbred ewe types, 1984
Located in A.B.R.O. Reprints 1984. Volume 18 of 19.
Repeated backcrossing and hybrid vigour in poultry, 1956
Located in Poultry Research Centre Staff Papers 1953-57.
Romulus [and James Cossar Ewart], 1870s-1930s
Photograph of James Cossar Ewart standing with Romulus, the zebra/horse hybrid, on the lawn behind a house in the late 19th or early 20th century.
Serum immunoglobulin concentrations at two days of age in lambs born after ova transfer between ewes of different breeds, 1973
Located in A.B.R.O. Reprints 1973 - 1974. Volume 8 of 19.
Sex-Linked Chickens - Black Leghorn x Barred Rock, 1870s-1930s
Photograph of two sex-linked chickens - Black Leghorn x Barred Rock - with the cockerel standing on the left in the early 20th century.
Sex-Linked Chickens - Buff Leghorn x Light Sussex, 1870s-1930s
Photograph of two sex-linked chickens - Buff Leghorn x Light Sussex - with the cockerel standing on the left in the early 20th century.
Sheep Breed Types, 1870s-1930s
Eight photographs of different breeds of sheep, both rams and ewes. The four top images are labelled 'Parents' and the four on the bottom are labelled 'Types Appearing in F2.'