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As many Military Service Members know, relationships with your teammates are a key measure of performance. Any relationship that risks readiness or safety can be a problem. So how close is too close? Take a look at some different scenarios that help explore the issue. Typically, it applies to unprofessional relationships between officers and enlisted personnel, but it can extend beyond rank too.

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Make Medium yours. PacBio Follow. And similar to the city singles scene, its viability has a lot to do with sex.

Eric Hyde in hyde tech. Amanda Schaffer in NEO. Does quantum mechanics mean that faster-than-light effects are possible? Medium is an open platform where million readers come to find insightful and dynamic thinking.

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More From Medium. With the new PacBio genome map, which contained nearly a third more genes than draft assemblies, the team were able to better characterize tilapia sex determining genes, data they predict will be a big boon to the aquaculture industry. Deep in the Dating Pool. Here, expert and undiscovered voices alike dive into the heart of any topic and bring new ideas to the surface. Sex is a surprisingly important trait at commercial fish farms.

What causes the fish to become male or female, and when exactly does it happen? Jeremie Harris.

The first step to finding a genetic solution is to figure out the basis of sex determination in the genomes of commercial tilapia stocks, which are dominated by the Nile tilapia Oreochromis niloticus. Short re on outstanding dating projects made possible by long-read sequencing. This used to Sex achieved by producing all-male populations marine interspecific crosses, but those strains have been lost or contaminated. In response to this need, a group of Korean scientists led by Young Chang Sohn of Gangneung-Wonju National University, set out to trace sex-preferential gene expression in H.

Their study started in a fish market, where they obtained sexually mature male and female abalone.

If you have a story to tell, knowledge to share, or a perspective to offer — welcome home. It could also benefit the wider scientific community, as tilapias and related species of other cichlid fishes are a promising model system for understanding the gene network controlling sex determination in vertebrates, they report.

Share your thinking. Harish Maddukuri in Predict.

Whoever quipped about plenty of other fish in the sea never waded through the New York City dating pool, nor the wild waters of our warming world. PacBio Short re on outstanding genetics projects made possible…. Once widely distributed throughout temperate and tropical coastal regions, most abalone consumed today has been farmed from commercial fisheries in China, Korea and Japan. How to de primers for polymerase chain reaction PCR? Kok Zhi Lee in The Startup.

In tilapia — the second most farmed fishes in the world — males grow to market-size earlier than females. Work so far has been hampered by incomplete maps of these sex determination genes, many of which are believed to be located in areas of highly differentiated, repetitive DNA sequences. Another sea organism of ificant economic interest is the abalone, a marine snail with mother-of-pearl shells that are attractive to jewelry lovers and delicate flesh that is attractive to gastronomes.

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Nautilus in Nautilus Magazine. Of approximately 20 species used in commercial aquaculture, the Haliotis discus hannai variety is particularly popular, and scientists are keen to better understand its physiology, molecular adaptation, genetic selection, disease, defense mechanisms, and ecological genetic diversity in order to support the growing industry.

They then used the Iso-Seq method to sequence RNA, capturing transcriptome information for 15, and 12, genes that coded for proteins in female and male abalones, respectively. genome assemblies were pieced together using many sequences of small stretches of the tilapia DNA. Believing that more contiguous sequences based on longer stretches of DNA would capture more detail, a team of scientists from the University of Maryland created a new assembly using PacBio long-read sequencing technology.

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Aquaculture has become an increasingly important source of sustainable seafood. Short re on outstanding genetics projects made possible…. Science Marine Fish Dna Animals.

Deep in the dating pool

It is therefore advantageous to grow out only male fish. Written by PacBio Follow.

Many fisheries now use hormonal masculinization, in which synthetic steroid hormones are administered to young tilapia before sexual differentiation. About Help Legal.

Females also start to reproduce at a smaller size, filling production ponds with small fish. But the practice is banned in several major producing countries, and scientists and fish farmers alike have been seeking alternatives.