sex determination


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determination

 [de-ter″mĭ-na´shun]
the establishment of the exact nature of an entity or event.
embryonic determination the loss of pluripotentiality in any embryonic part and its start on the way to an unalterable fate.
sex determination the process by which the sex of an organism is fixed; associated, in man, with the presence or absence of the Y chromosome.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

sex de·ter·mi·na·tion

determination of the sex of a fetus in utero by identification of fetal chromosomes.
Farlex Partner Medical Dictionary © Farlex 2012
The mechanism in a given species by which sex is determined. In many species, it is determined at the time of fertilisation by the characteristics of the sperm fertilising the egg
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

sex de·ter·mi·na·tion

(seks dĕ-tĕr'mi-nā'shŭn)
1. Identification of the sex of a fetus in utero by identification of fetal chromosomes or by imaging of physical appearance of external genitalia.
2. The determination of the gender of a preimplanted embryo during in vitro fertilization.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

sex determination

the control of maleness and femaleness by genes located on SEX CHROMOSOMES. The actual mechanism differs in various organisms but very often is through a HETEROGAMETIC SEX and a
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Although sex determination with maximum anteroposterior diameter was discussed by MacLaughlin and Bruce in 1985, its efficacy has not been tested on many populations.
The extent of genetic sex determination was a matter of speculation (Coe 1943) until controlled crosses were first employed with the American oyster, C.
Piferrer, "Genetic architecture of sex determination in fish: applications to sex ratio control in aquaculture," Frontiers in Genetics, vol.
Table 4 shows that only 11.85% of the women of rural area were aware about sex determination as compared to urban area in which it was 45.59%, and it was statistically significant.
I anticipate that understanding the role of cortisol in the initial stages of sex change will further improve our understanding of sex determination and differentiation across vertebrates and may lead to new tools to control fish sex ratios in aquaculture.
We need to question whether laws preventing sex determination and punishing those involved push the decision burden on individuals, while not addressing the root causes of gender discrimination.
Fujii et al., "MYB transcription factor gene involved in sex determination in Asparagus officinalis," Genes to Cells, vol.
The company also put labels on the machines warning that "fetal sex determination is illegal and punishable by law."
Flower development and sex determination are under genetic and environmental control, as well are under the control of various growth regulators and hormones i.e.