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Noturus gyrinus (Mitchill) (Tadpole madton) 2n = 42
This karyotype consists of 11 pairs of metacentric chromosomes showing a wide range in size and 10 pairs of subtelocentrics. Except for one relatively large pair, the subtelocentrics are quite small.Expand
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Amphisbaena vermicularis (Wagler) (Worm lizard; Cobra de duas cabeças) 2n = 44
The karyotypes were obtained from squash preparations of the intestine. Both male and female have similar karyotypes; sex chromosome hetemorphism was not detected in either sex.
Leposternon microcephalum (Wagler) (Cobra de duas cabeças) 2n = 34
The karyotypes presented here were obtained from squash preparation of the intestine (female) and tissue culture (male). Sex chromosome heteromor-phism was not detected in either sex.
Amphisbaena dubia (Müller) (Worm lizard; Cobra de duas cabeças) 2n = 26(25, 27, 28)
The karyotypes shown here were obtained from squash preparations of the spleen (female) and intestine (male). Intraindividual polymorphism of number involving macro and microchromosomes was found inExpand
Sobre a história da genética no Instituto Butantan
Spilotes pullatus anomalepis (Bocourt) (Chicken snake; Caninana; Caninana do papo amarelo; Yacaniña) 2n = 36
The karyotypes shown came from short term blood cultures. The female is heterogametic, the fourth pair of macrochromosomes consists of the sex chromosomes ZZ in the male, and ZW in the female.
Estudo prospectivo dos efeitos da translocação Robertsoniana 1/29 sobre a fertilidade de machos Marchigiana
O presente estudo refere-se aos efeitos da translocacao 1/29 sobre a fertilidade de bovinos machos Marchigiana, de forma prospectiva. Comparamos femeas Nelore normais, inseminadas artificialmente comExpand
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