chromosomal difference
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Chromosomal Difference between Male and Female Trees of Ginkgo biloba Examined by Karyotype Analysis and Mapping of rDNA on the Chromosomes by Fluorescence in situ Hybridization

Engei Gakkai zasshi ◽

10.2503/jjshs.74.275 ◽

2005 ◽

Vol 74 (4) ◽

pp. 275-280 ◽

Cited By ~ 12

Author(s):

Yoshinori Nakao ◽

Tomoaki Taira ◽

Shosaku Horiuchi ◽

Kenji Kawase ◽

Yasuhiko Mukai

Keyword(s):

In Situ Hybridization ◽

Fluorescence In Situ Hybridization ◽

Ginkgo Biloba ◽

Karyotype Analysis ◽

Male And Female ◽

Chromosomal Difference

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CHROMOSOMES OF THE MEXICAN PLATEAU MOUSE, PEROMYSCUS MELANOPHRYS, AND A NEW SEX DETERMINING MECHANISM IN MAMMALS

Canadian Journal of Genetics and Cytology ◽

10.1139/g74-086 ◽

1974 ◽

Vol 16 (4) ◽

pp. 797-804 ◽

Cited By ~ 5

Author(s):

Earl G. Zimmerman

Keyword(s):

Y Chromosome ◽

X Chromosome ◽

Diploid Number ◽

Chromosomal Analysis ◽

X Chromosomes ◽

Unique Type ◽

Chromosomal Difference ◽

Males And Females

A chromosomal analysis of 86 specimens of Peromyscus melanophrys reveals a unique type of chromosomal difference between males and females Females possess three large pairs of subtelocentric autosomes, two pairs of small submetacentric autosomes, and 18 pairs of acrocentric autosomes. The X chromosomes are also subtelocentric. Males possess a similar karyotype with a subtelocentric X chromosome, a minute Y chromosome, and two unmatched autosomes, a large subtelocentric and a large acrocentric. Both sexes have a diploid number of 48. Studies from meiosis and autoradiography indicate that a portion of the original Y chromosome has been translocated to an autosome resulting in a new multiple sex determining mechanism in mammals, an X1X1X2X2/X1X2Y1Y2 system.