Zbornik - Društvo genetičara Srbije

62 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE II-Pos-7
Subotica, 30. novembar - 4. decembar 2004.
INTRA-INDIVIDUALNI MOZAICIZAM U BROJU B HROMOZOMA KOD
UTOGRLOG MIŠA, Apodemus flavicollis (Rodentia, Mammalia)
M. Vujoševiæ i Jelena Blagojeviæ
Institut za biološka istraiivanja «Siniša Stankoviæ», Beograd
Populacije utoglog miša, Apodemus flavicollis, karakteriše èesto prisustvo B hromozoma.
Frekvenca intra-individualnog mozaicizma B hromozoma ispitana je kod 995
ivotinja sakupljenih na 6 lokaliteta u Srbiji. Naðeno je da 33.06% ivotinja ima B
hromozome. Meðu njima je 26.44% bilo mozaièno. Ukupno 32 mozaiène ivotinje, koje
su imale više od jednog B hromozoma, analizirane su u odnosu na distribuciju B
hromozoma. Utvrðeno je da je distribucija B hromozoma razlièita meðu grupama
ivotinja sa razlièitim brojem B hromozoma i raste sa brojem B hromozoma. Frekvenca
mozaika je u rasponu od 0.22 do 0.25 i razlikuje se meðu lokalitetima.
INTRA INDIVIDUAL MOSAICISM IN THE NUMBER OF B CHROMOSOMES
IN YELLOW-NECKED MOUSE, Apodemus flavicollis (Rodentia, Mammalia)
Populations of yellow-necked mouse, Apodemus flavicollis are characterized by frequent
appearance of B chromosomes (Bs). Frequency of intra individual mosaicism of Bs was
studied in 995 animals collected at six localities in Serbia. It was found that 33.06% were
with B chromosomes. Among them 26.44% were mosaics. Total of 32 mosaic animals
with more than one B chromosome were analyzed for distribution of Bs and it was found
that distribution of mosaics is quite different between groups of animals with different
number of Bs and is increasing with number of Bs. Frequency of mosaics differ between
localities and is in the range from 0.22 to 0.55.