[Features of hybridization of domestic hen and guinea fowl and structuro-functional organization of hybrid chromosomes in comparison with original species].
Hybridization of the domestic hen and the guinea fowl is accompanied by low fertility of eggs, high embryonic mortality of hybrid embryos and feti at various development stages and absolute sterility of the hybrid progeny. Cytological analysis of the hybrids obtained reveals heteromorphity of the 6th pair of their chromosomes although the character of the DNA synthesis in this pair is unchanged and is inherited from the initial species. A program of the DNA synthesis in the sexual chromosomes of hybrids differs from that in parents and seems to be one of the main causes of their sterility.
Steklenev
E P
EP
Kozikova
L V
LV
D000818:Animals; D002645:Chickens; D002875:Chromosomes; D004247:DNA / Q000096:biosynthesis; D005260:Female; D005298:Fertility; D006824:Hybridization, Genetic; D007399:Interphase; D008297:Male; D011200:Poultry / Q000235:genetics*
D004247:DNA
Osobennosti skreshchivaniia domashneĭ kuritsy s tsesarkoĭ i strukturno-funktsional'naia organizatsiia khromosom gibridov v sravnenii s iskhodnymi vidami.