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  2. Index of branches of science - Wikipedia

    en.wikipedia.org/wiki/Index_of_branches_of_science

    Mammalogy – Study of mammals; Marine biology – Scientific study of organisms that live in the ocean – study of the ocean's ecosystem; Mastology – Study of mammals – study of mammals [citation needed] Mathematics – Area of knowledge – study of magnitude, number, and forms; Mazology – mammalogy; study of mammals [citation needed]

  3. DNA - Wikipedia

    en.wikipedia.org/wiki/DNA

    According to another study, when measured in a different solution, the DNA chain measured 22–26 Å (2.2–2.6 nm) wide, and one nucleotide unit measured 3.3 Å (0.33 nm) long. [10] The buoyant density of most DNA is 1.7g/cm 3. [11] DNA does not usually exist as a single strand, but instead as a pair of strands that are held tightly together.

  4. G protein-coupled receptor - Wikipedia

    en.wikipedia.org/wiki/G_protein-coupled_receptor

    The seven-transmembrane α-helix structure of bovine rhodopsin. G protein-coupled receptors (GPCRs), also known as seven-(pass)-transmembrane domain receptors, 7TM receptors, heptahelical receptors, serpentine receptors, and G protein-linked receptors (GPLR), form a large group of evolutionarily related proteins that are cell surface receptors that detect molecules outside the cell and ...

  5. Abiogenesis - Wikipedia

    en.wikipedia.org/wiki/Abiogenesis

    The study of abiogenesis aims to determine how pre-life chemical reactions gave rise to life under conditions strikingly different from those on Earth today. It primarily uses tools from biology and chemistry , with more recent approaches attempting a synthesis of many sciences.

  6. Sex - Wikipedia

    en.wikipedia.org/wiki/Sex

    Part of a series on Sex Biological terms Sexual dimorphism Sexual differentiation Feminization Virilization Sex-determination system XY XO ZW ZO Temperature-dependent Haplodiploidy Heterogametic sex Homogametic sex Sex chromosome X chromosome Y chromosome Sex chromosome anomalies Testis-determining factor Hermaphrodite Sequential hermaphroditism Simultaneous hermaphroditism Intersex (biology ...

  7. Child development - Wikipedia

    en.wikipedia.org/wiki/Child_development

    A study of 18-month-olds whose mothers had depressive symptoms while the children were 6 weeks and/or 6 months old found that maternal depression had no effect on the child's cognitive development. Furthermore, the study indicates that maternal depression combined with a poor home environment is more likely to have an effect on cognitive ...

  8. Vagina - Wikipedia

    en.wikipedia.org/wiki/Vagina

    The term vagina is from Latin vāgīna, meaning "sheath" or "scabbard". [1] The vagina may also be referred to as the birth canal in the context of pregnancy and childbirth. [2] [3] Although by its dictionary and anatomical definitions, the term vagina refers exclusively to the specific internal structure, it is colloquially used to refer to the vulva or to both the vagina and vulva.

  9. Deletion (genetics) - Wikipedia

    en.wikipedia.org/wiki/Deletion_(genetics)

    Deletion on a chromosome. In genetics, a deletion (also called gene deletion, deficiency, or deletion mutation) (sign: Δ) is a mutation (a genetic aberration) in which a part of a chromosome or a sequence of DNA is left out during DNA replication.

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