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Meiosis vs Mitosis: Unraveling Cell Division

Cell division can be confusing, but it's not as difficult if you pretend chromosomes are sentences.

United statesBrandon jacksonOscar hertwigEnvironmental sciences at virginia longwood universityExchanging geneticDifference between meiosisEnvironmental sciencesGenetic materialCell dividesGenetic informationOmologous chromosomesSomatic cellsArent cellSperm cellRocess of mitosis

DNA: How the secret of life was discovered 70 years ago

Letters and scientific articles by James Watson and Francis Crick tell the history of the double helix scientific breakthrough that defined the 20th century, and credit the contributions of Rosalind Franklin and Maurice Wilkins

United kingdomUnited statesCity ofWalther flemmingFrancis crickLinus paulingSevero ochoaMarshall nirenbergGregor mendelVictork mcelhenyOscar hertwigJames watsonThomas hunt morganMaurice wilkinsPhoebus leveneRosalind franklin

There Is an Easy Way to Understand Mitosis and Meiosis

The processes of mitosis and meiosis are what make every living creature unique. HowStuffWorks breaks down the difference between the two.

United statesJuhari muhade gettyBrandon jacksonOscar hertwigEnvironmental sciences at virginia longwood universityEnvironmental sciences

Cryptic sex: How female and unisexual animals reproduce asexually — without males

Cryptic sex: How female and unisexual animals reproduce asexually — without males
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Cryptic sex: How female and unisexual animals reproduce asexually — without males

Author: Root Gorelick (MENAFN - The Conversation) Not all species need sperm to fertilize an egg for sexual reproduction. Some species need sperm in order to induce completion of egg nucleus development, but then never use the sperm s DNA. I describe how this self-sexual reproduction occurs in many animals, including some insects, molluscs, fish, amphibians and reptiles, but not mammals. People have long understood that ejaculate is needed for human pregnancy, but did not understand much more. In the late 1600s, the Dutch scientist Antonie van Leeuwenhoek, who was one of the first microbiologists, thought his own sperm were parasites .

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