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  2. Segmentation (biology) - Wikipedia

    en.wikipedia.org/wiki/Segmentation_(biology)

    Segmentation in biology is the division of some animal and plant body plans into a linear series of repetitive segments that may or may not be interconnected to each other. This article focuses on the segmentation of animal body plans, specifically using the examples of the taxa Arthropoda , Chordata , and Annelida .

  3. Segmentation gene - Wikipedia

    en.wikipedia.org/wiki/Segmentation_gene

    A segmentation gene is a gene involved in the early developmental stages of pattern formation. It regulates how cells are organized and defines repeated units in the embryo . Segmentation genes have been documented in three taxa: arthropods (i.e. insects and crabs ), [ 2 ] chordates (i.e. mammals and fish ), and annelids (i.e. leeches and ...

  4. Segmentation in the human nervous system - Wikipedia

    en.wikipedia.org/wiki/Segmentation_in_the_human...

    Segmentation is the physical characteristic by which the human body is divided into repeating subunits called segments arranged along a longitudinal axis. In humans, the segmentation characteristic observed in the nervous system is of biological and evolutionary significance. [1]

  5. Metamerism (biology) - Wikipedia

    en.wikipedia.org/wiki/Metamerism_(biology)

    Earthworms are a classic example of biological homonymous metamery – the property of repeating body segments with distinct regions. In biology, metamerism is the phenomenon of having a linear series of body segments fundamentally similar in structure, though not all such structures are entirely alike in any single life form because some of them perform special functions. [1]

  6. Homeotic gene - Wikipedia

    en.wikipedia.org/wiki/Homeotic_gene

    For example, in one study, a pathogenic phytoplasma caused homeotic genes in a flowering plant to either be significantly upregulated or downregulated. This led to severe phenotypic changes including dwarfing, defects in the pistils, hypopigmentation, and the development of leaf-like structures on most floral organs. [ 14 ]

  7. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

    www.aol.com/today-nyt-strands-hints-spangram...

    An example spangram with corresponding theme words: PEAR, FRUIT, BANANA, APPLE, etc. Need a hint? Find non-theme words to get hints. For every 3 non-theme words you find, you earn a hint.

  8. Segment polarity gene - Wikipedia

    en.wikipedia.org/wiki/Segment_polarity_gene

    The most commonly cited examples of these genes are engrailed and gooseberry in Drosophila melanogaster. [3] The segment polarity is the last step in embryonic development and a repeated pattern where each half of each segment is deleted and a mirror-image is duplicated and reversed to replace that half segment; thus, forming a pattern element. [4]

  9. A Path Out Of Trouble - data.huffingtonpost.com

    data.huffingtonpost.com/2016/school-police/new...

    About This Series “A Path Out Of Trouble” is the fourth in a series of stories about police in schools. It is produced in collaboration with The Hechinger Report.