scholarly journals Development of Male Sex Cells in the Swallowtail, Papilio xuthus L. (Lepidoptera : Papilionidae in Relation to Pupal Diapause)

1980 ◽  
Vol 15 (2) ◽  
pp. 151-158 ◽  
Author(s):  
Hideharu NUMATA ◽  
Toshitaka HIDAKA
Keyword(s):  
Papilio Xuthus ◽  
Pupal Diapause ◽  
Male Sex ◽  
Sex Cells

scholarly journals The Case of Qualitative Genetics in Fish

2020 ◽  
Vol 1 (1) ◽  
pp. 14-20
Author(s):  
Safaa Tariq
Keyword(s):  
Genetic Engineering ◽  
Recombinant Dna ◽  
Dorsal Spine ◽  
Engineering Technology ◽  
Living Things ◽  
A Cell ◽  
Male Sex ◽  
Genetic Engineering Technology ◽  
Sex Cells ◽  
Living Being

Character inheritance or heredity is the inheritance of traits from parents to their children (offspring). The event or process by which a cell of an organism tends to become or possess the characteristics of its parents. The discovery of recombinant DNA opened up developments in genetic engineering. Genetic engineering technology provides a lot of hope for us in various areas of need including gene therapy efforts. Inheritance is the traits or traits of living things that are passed down from generation to generation or passed down from parent to offspring. The traits of a living being are inherited through male sex cells and female sex cells. Normal pigmented goldfish are mated with yellow-striped goldfish on the dorsal spine to produce 100% fish with yellow lines on the dorsal spine.

scholarly journals Genetic evidence of an unorthodox chromosomal system in the lac insect Kerria lacca (Kerr)

1970 ◽  
Vol 16 (3) ◽  
pp. 341-344 ◽  
Author(s):  
N. S. Chauhan
Keyword(s):  
Germ Line ◽  
Chromosome Behaviour ◽  
Colour Difference ◽  
Male Germ Line ◽  
Cytological Evidence ◽  
Kerria Lacca ◽  
Cytogenetic Evidence ◽  
Lac Insect ◽  
Male Sex ◽  
Sex Cells

SUMMARYThe colour difference (crimson and yellow) in Kerria lacca (Kerr) was used to test the ‘Lecanoid’ system of chromosome behaviour proposed on cytological evidence. The colour strains bred true for colour. Reciprocal matings between the colour strains produced only crimson sons and daughters, confirming that the colour difference is not sex-linked and that the male is somatically a diploid. The phenotypes of the F2 and the backcross generations differed according to the heterozygosity and the direction of cross of the F1 parents, since heterozygous females produced two kinds of gamete but heterozygous males produced only the maternal kind. Thus, while elimination of the paternal gene and hence chromosome was confirmed during the formation of male sex-cells, demonstration of somatic diploidy of the male is not compatible with a ‘Lecanoid’ system in K. lacca. Instead, the available cytogenetic evidence is suggestive of a chromosome system with heterochromatization and elimination of the paternal chromosome-set confined to the male germ line.

The Co-morbidity of Pedophilia and Zoophilia in Male Sex Offenders

2000 ◽  
Author(s):  
Ronna J. Dillinger ◽  
Susan L. Amato ◽  
Kelly Hardy
Keyword(s):  
Sex Offenders ◽  
Co Morbidity ◽  
Male Sex ◽  
Male Sex Offenders

Concurrent sexual partnerships among male sex partners of California women, 2004

2008 ◽  
Author(s):  
Adrienne Rain Mocello ◽  
Joan M. Chow ◽  
Michael C. Samuel ◽  
Gail Bolan
Keyword(s):  
Sex Partners ◽  
Sexual Partnerships ◽  
Concurrent Sexual Partnerships ◽  
Male Sex
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