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Genetics sex

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Genomics in aquaculture to better understand species biology and accelerate genetic progress View all 15 Articles. Controlling the sex ratio is essential in finfish farming. A balanced sex ratio is usually good for broodstock management, since it enables to develop appropriate breeding schemes. However, in some species the production of monosex populations is desirable because the existence of sexual dimorphism, primarily in growth or first time of sexual maturation, but also in color or shape, can render one sex more valuable.
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Genetic architecture of sex determination in fish: applications to sex ratio control in aquaculture

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Genetic Mechanisms of Sex Determination | Learn Science at Scitable

Try out PMC Labs and tell us what you think. Learn More. In this commentary, Michelle Arbeitman et al. SEX differences affect nearly every biological process. These differences may be seen in obvious morphological traits, such as deer antlers, beetle horns, and the sex-specific color patterns of birds and butterflies. Reproductive behaviors may also be quite different between the sexes and include elaborate courtship displays, parental care of progeny, and aggressive or territorial behaviors. Beyond what meets the eye, sex differences are also pervasive in subcellular processes such as meiosis, recombination, gene expression, and dosage compensation.
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Genetic Mechanisms of Sex Determination

This page has been archived and is no longer updated. Whether an animal will become a male, a female, or a hermaphrodite is determined very early in development. Scientists have worked for hundreds of years to understand the sex-determination system. For instance, in B. If the male's heat could overwhelm the female's coldness, then a male child would form.
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As a clinical geneticist, Paul James is accustomed to discussing some of the most delicate issues with his patients. But in early , he found himself having a particularly awkward conversation about sex. A year-old pregnant woman had visited his clinic at the Royal Melbourne Hospital in Australia to hear the results of an amniocentesis test to screen her baby's chromosomes for abnormalities. The baby was fineā€”but follow-up tests had revealed something astonishing about the mother. Her body was built of cells from two individuals, probably from twin embryos that had merged in her own mother's womb.
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