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Sex

Sex refers to the male and female duality of biology and reproduction.

Note: The above text is excerpted from the Wikipedia article "Sex", which has been released under the GNU Free Documentation License.

For more information, see the following related content on ScienceDaily:

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Novel Hypotheses That Answer Key Questions About the Evolution of Sexual Reproduction

Aug. 18, 2022 — Two novel hypotheses have been proposed that address the 'two-fold cost of sex': one of the biggest enigmas in the evolution of sexual ...

Species of Algae With Three Sexes That All Mate in Pairs Identified in Japanese River

July 14, 2021 — For 30 years, University of Tokyo Associate Professor Hisayoshi Nozaki has visited the Sagami River to collect algal samples to understand how living things evolved different sexes. The threes sexes ...

Highly Dynamic Sex Chromosomes in Cichlid Fishes

Sep. 2, 2021 — The cichlids of Lake Tanganyika in Africa are highly diverse -- including with regard to sex chromosomes. These have changed extremely frequently in the course of the evolution of these fish and, ...

Diversity of Life and the 'Paradox of Sex'

July 29, 2021 — New research finds that sexual reproduction and multicellularity drive diversity among different ...

Research Outlines How Sex Differences Have Evolved

Nov. 2, 2023 — Researchers have shown that sex differences in animals vary dramatically across species, organs and developmental stages, and evolve quickly at the gene level but slowly at the cell type ...

Bearded Dragon Embryos Become Females Either Through Sex Chromosomes or Hot Temperatures

Apr. 15, 2021 — Bearded dragon embryos can use two different sets of genes to become a female lizard -- one activated by the sex chromosomes and the other activated by high temperatures during development, ...

Big Differences Found in Male and Female Jojoba Plant Sex Genes

Oct. 14, 2021 — Hot desert sex has resulted in major genetic differences between male and female jojoba plants -- one of only 6 percent of plants that require a male and female plant to reproduce. New research ...

Asexual Reproduction Can Have Negative Effects on Genome Evolution in Stick Insects, Study Finds

Feb. 24, 2022 — Stick insects that reproduce asexually cannot adapt as quickly in the course of evolution as sexually reproducing species, leading to a decrease in biological diversity, according to new ...

Proteins Roll the Dice to Determine Bee Sex

Oct. 4, 2023 — To date it has been unclear exactly how the sex of a bee is determined. A research team comprising biologists and chemists has now identified a key gene and the molecular mechanism linked with it. ...

Sex-Determination Mechanisms in Birds

Sep. 9, 2022 — Scientists have known that sex-determination in vertebrates happens in the germ cells, a body's reproductive cells, and the somatic cells, the cells that are not reproductive cells. Yet they ...

Plants & Animals News

December 9, 2023

'Shocking' Discovery: Electricity from Electric Eels May Transfer Genetic Material to Nearby Animals

Dec. 5, 2023 — Researchers have discovered that electric eels can alter the genes of tiny fish larvae with their electric shock. Their findings help to better understand electroporation, a method by which genes can ...

Mice Pass the Mirror Test, a Classic Indicator of Self-Recognition

Dec. 5, 2023 — Researchers report that mice display behavior that resembles self-recognition when they see themselves in the mirror. When the researchers marked the foreheads of black-furred mice with a spot of white ink, the mice spent more time grooming their ...

More Than a Meteorite: New Clues About the Demise of Dinosaurs

Dec. 4, 2023 — What wiped out the dinosaurs? A meteorite plummeting to Earth is only part of the story, a new study suggests. Climate change triggered by massive volcanic eruptions may have ultimately set the stage for the dinosaur extinction, challenging the ...

Twin Research Indicates That a Vegan Diet Improves Cardiovascular Health

Nov. 30, 2023 — A recent trial of identical twins comparing vegan and omnivore diets found that a vegan diet improves overall cardiovascular ...

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New Insights Into Zebra Mussel Attachment Fibers Offer Potential Solutions to Combat Invasive Species, Develop Sustainable Materials

Dec. 8, 2023 — A recent study has revealed that an unlikely event, occurring over 12 million years ago played an important role in shaping one of Canada's most ...

Manipulation of Gut Microbiota With Flaxseed Could Reduce Breast Cancer Risk

Dec. 7, 2023 — A new study demonstrates that the human gut microbiome may be a factor in breast ...

Tiny Llama Nanobodies Neutralize Different Noroviruses: Can They Improve Human Anti-Viral Therapies?

Dec. 7, 2023 — Researchers investigated a novel strategy to neutralize human noroviruses. They tested the ability of tiny antibodies produced by llamas, called ...

Protected Areas in Thailand Are at a Higher Risk of Forest Fires When Located Away from Indigenous Communities

Dec. 7, 2023 — Research has found that national parks and protected areas are at a higher risk of forest fires when located farther away from indigenous ...

Zika's Shape-Shifting Machinery, and a Possible Vulnerability

Dec. 8, 2023 — Viruses have limited genetic material -- and few proteins -- so all the pieces must work extra hard. Zika is a great example; the virus only produces 10 proteins. Now researchers have shown how the ...

Suburban Backyard Home to More Than 1,000 Species

Dec. 8, 2023 — A challenge among three housemates to identify species around their inner-Brisbane home has resulted in an academic research paper, showcasing the rich biodiversity in urban landscapes. ...

How Immune Cells Recognize Their Enemies

Dec. 8, 2023 — In order for immune cells to do their job, they need to know against whom they should direct their attack. Research teams a have identified new details in this ...

Adapting to Hypoxia: Zooplankton Influence the Efficiency of the Biological Carbon Pump in the Humboldt Current Off Peru

Dec. 8, 2023 — Marine organisms play a crucial role in the global carbon cycle. Phytoplankton absorb carbon dioxide from the atmosphere and sequester it in organic ...

Immersive VR Goggles for Mice Unlock New Potential for Brain Science

Dec. 8, 2023 — New miniature virtual reality (VR) goggles provide more immersive experiences for mice living in laboratory settings. By more faithfully simulating natural environments, the researchers can more ...

Climate Change Will Increase Wildfire Risk and Lengthen Fire Seasons

Dec. 8, 2023 — Wildfires are some of the most destructive natural disasters in the country, threatening lives, destroying homes and infrastructure, and creating air pollution. In order to properly forecast and ...