Sex Determination of Germ Cells in Drosophila

2007 ◽  
pp. 193-209 ◽  
Author(s):  
Anthony P. Mahowald ◽  
Grace Wei
Keyword(s):  
Sex Determination ◽  
Germ Cells

scholarly journals Sex Determination of Equine Somatic and Germ Cells by PCR Amplification Based on the Sequence Polymorphism of X- and Y-Chromosomal Amelogenin Genes

1999 ◽  
Vol 70 (7) ◽  
pp. 6-10 ◽  
Author(s):  
Yasutoshi FUKUSHIMA ◽  
Harutaka MUKOYAMA ◽  
Fumio SATO ◽  
Telhisa HASEGAWA ◽  
Nobushige ISHIDA ◽  
...  
Keyword(s):  
Sex Determination ◽  
Germ Cells ◽  
Pcr Amplification ◽  
Sequence Polymorphism

Genetic control of sex determination in the germ line and soma of the housefly, Musca domestica

Development ◽  
1994 ◽  
Vol 120 (9) ◽  
pp. 2531-2538 ◽  
Author(s):  
D. Hilfiker-Kleiner ◽  
A. Dubendorfer ◽  
A. Hilfiker ◽  
R. Nothiger
Keyword(s):  
Sex Determination ◽  
Musca Domestica ◽  
Germ Cells ◽  
Maternal Effect ◽  
Germ Line ◽  
M Cells ◽  
Female Genotype ◽  
Female Germ Line ◽  
Pole Cells

In Musca domestica, sex in the soma is cell autonomously determined by the male-determiner M, or by the female-determiner FD. Transplanted pole cells (precursors of the germ line) show that sex determination of germ cells is non-autonomous genotypically male pole cells form functional eggs in female hosts, and genotypically female pole cells form functional sperm in male hosts. When M/+ cells undergo oogenesis, a male-determining maternal effect predetermines offspring without M, i.e. of female genotype, to develop as fertile males. FD is epistatic to M in the female germ line, as it is in the soma, overruling the masculinizing effect of M. The results suggest that maternal F product is needed for activation of the zygotic F gene.

scholarly journals The role of the ovarian tumor locus in Drosophila melanogaster germ line sex determination

Development ◽  
1993 ◽  
Vol 119 (1) ◽  
pp. 123-134 ◽  
Author(s):  
D. Pauli ◽  
B. Oliver ◽  
A.P. Mahowald
Keyword(s):  
Drosophila Melanogaster ◽  
Sex Determination ◽  
Germ Cells ◽  
Ovarian Tumor ◽  
Germ Line ◽  
Gene Dosage ◽  
Constitutive Expression ◽  
Regulatory Cascade

The locus ovarian tumor (otu) is involved in several aspects of oogenesis in Drosophila melanogaster. The possible role of otu in the determination of the sexual identity of germ cells has not been extensively explored. Some otu alleles produce a phenotype known as ovarian tumors: ovarioles are filled with numerous poorly differentiated germ cells. We show that these mutant germ cells have a morphology similar to primary spermatocytes and that they express male germ line-specific reporter genes. This indicates that they are engaged along the male pathway of germ line differentiation. Consistent with this conclusion, we found that the splicing of Sex-lethal (Sxl) pre-mRNAs occurs in the male-specific mode in otu-transformed germ cells. The position of the otu locus in the regulatory cascade of germ line sex determination has been studied by using mutations that constitutively express the feminizing activity of the Sxl gene. The sexual transformation of the germ cells observed with several combinations of otu alleles can be reversed by constitutive expression of Sxl. This shows that otu acts upstream of Sxl in the process of germ line sex determination. Other phenotypes of otu mutations were not rescued by constitutive expression of Sxl, suggesting that several functions of otu are likely to be independent of sex determination. Finally, we show that the gene dosage of otu modifies the phenotype of ovaries heterozygous for the dominant alleles of ovo, another gene involved in germ line sex determination. One dose of otu+ enhances the ovoD ovarian phenotypes, while three doses partially suppress these phenotypes. Synergistic interaction between ovoD1 and otu alleles leads to the occasional transformation of chromosomally female germ cells into early spermatocytes. These interactions are similar to those observed between ovoD and one allele of the sans fille (snf) locus. Altogether, our results imply that the otu locus acts, along with ovo, snf, and Sxl, in a pathway (or parallel pathways) required for proper sex determination of the female germ line.

SEX DETERMINATION OF FETUS PRENATAL FROM MATERNAL PLASMA BY USING DUPLEX PCR TECHNIQUE IN GOAT

2014 ◽  
Vol 13 (1) ◽  
pp. 50-59
Author(s):  
A NisreenYasirJasim ◽  
Tahir A. Fahid ◽  
Talib Ahmed Jaayid
Keyword(s):  
Sex Determination ◽  
Maternal Plasma ◽  
Duplex Pcr

Study of Significance of Pelvic Brim Chord and Pelvic Brim Depth in Sex Determination of Human Hip Bone

2012 ◽  
Vol 3 (1) ◽  
pp. 384-386
Author(s):  
Dr. Sudarshan Gupta ◽  
◽  
Dr. Bhadresh Vaghela ◽  
Dr. Deepak Howale ◽  
Dr. Mehul Tandel
Keyword(s):  
Sex Determination ◽  
Pelvic Brim

AVALIAÇÃO DO CONHECIMENTO TRADICIONAL DOS PESCADORES DA RDSM APLICADO À IDENTIFICAÇÃO DO SEXO DE PIRARUCUS

2010 ◽  
Vol 5 (2) ◽  
pp. 59-66
Author(s):  
Kelven Lopes ◽  
Helder Lima de Queiroz
Keyword(s):  
Sex Determination ◽  
Traditional Knowledge ◽  
Structured Interviews ◽  
Sustainable Fisheries ◽  
Arapaima Gigas ◽  
Males And Females

This study examined the traditional knowledge of fishermen at Mamirauá Reserve about sex determination of pirarucus, Arapaima gigas Schinz 1822. We evaluated the criteria used for by fishermen in the sector Jarauá at Mamirauá Reserve for this determination, during the fisheries season, from October to November 2004. We analyzed responses of a group of about 15 fishermen collected in structured interviews regarding 109 individual pirarucus, 65 males and 44 females. From this sample, only 64 fish have their sex correctly predicted by the fishermen. Although the traditional knowledge of local fishermen is a key component of the sustainable fisheries of this species, this knowledge is not functional in all ranges and aspects, as in sex distinction. We found that the local fishermen evaluated are not able to recognize the sex of pirarucus, although some criteria applied for this purpose are consistent with their biology. The rates of correct forecasts for recognition of males and females were similar to those obtained by chance, even when the criteria applied were consistent, as the criterion “coloration”, which was significantly consistent for identification of males. Yet the group of fishermen interviewed in this study apparently did not apply this criterion correctly.

scholarly journals Sex Determination of Bovine Embryos Using H-Y Antibodies

1989 ◽  
Vol 30 (2) ◽  
pp. 155-164 ◽  
Author(s):  
Birthe Avery ◽  
Mette Schmidt
Keyword(s):  
Sex Determination ◽  
Bovine Embryos

scholarly journals Sex Determination of Bovine Embryos Based on Embryonic Cleavage Rates

1989 ◽  
Vol 30 (2) ◽  
pp. 147-153
Author(s):  
Birthe Avery ◽  
Mette Schmidt ◽  
Torben Greve
Keyword(s):  
Sex Determination ◽  
Bovine Embryos ◽  
Embryonic Cleavage

scholarly journals Sex Determination of Sika Deer (Cervus nippon yesoensis) Using Nested PCR from Feces Collected in the Field

2011 ◽  
Vol 73 (12) ◽  
pp. 1611-1616 ◽  
Author(s):  
Shoki YAMAZAKI ◽  
Yuta MOTOI ◽  
Kazuya NAGAI ◽  
Tsuyoshi ISHINAZAKA ◽  
Makoto ASANO ◽  
...  
Keyword(s):  
Sex Determination ◽  
Nested Pcr ◽  
Sika Deer ◽  
Cervus Nippon ◽  
Cervus Nippon Yesoensis
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