Linked Life Data

9345913

Source:http://linkedlifedata.com/resource/pubmed/id/9345913

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1997-11-25
pubmed:abstractText
Investigations conducted in Mongolia into the sterility of the male khainag, an F1 hybrid animal resulting from crossing cattle (Bos taurus, 2n = 60) with yaks (B. grunniens, 2n = 60), are reported. Reduced numbers of spermatogonia appear to characterise the testicular tubules of the khainag, and despite the identical cytological appearance of the two parental karyotypes, synaptic anomalies are seen at meiotic prophase in primary spermatocytes. The female khainag is fertile and can be backcrossed to cattle or yak bulls to produce a B1 backcross animal, the ortoom. Further backcrossing of ortoom females to cattle or yaks will yield a B2 backcross animal, the usanguzee. The impression is gained of better meiotic pairing in the backcross animals than in the khainag. The "Haldane Rule" is followed perfectly by the cattle x yak hybrid; namely, sterility is confined to the male.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0301-0171
pubmed:author
pubmed:issnType
Print
pubmed:volume
78
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
69-73
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Fertility investigations in the F1 hybrid and backcross progeny of cattle (Bos taurus) and yak (B. grunniens) in Mongolia.
pubmed:affiliation
Department of Genetics, Institute of General and Experimental Biology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't