Biology Dictionary

  • Dynamic equilibrium

    Dynamic equilibrium

    A state of balance in a system where opposing processes occur at equal rates, resulting in no net change.

  • Dyne

    Dyne

    A unit of force in the centimeter-gram-second system of units, equal to 10^-5 newtons.

  • Dynein

    Dynein

    A motor protein that moves along microtubules in cells, involved in processes such as ciliary and flagellar movement.

  • Dysneuria

    Dysneuria

    Abnormal sensations or pain in the urinary tract, often caused by irritation or infection.

  • Dyspepsia

    Dyspepsia

    Indigestion or discomfort in the upper abdomen, often associated with bloating, nausea, and belching.

  • Dominance hierarchy

    Dominance hierarchy

    A social ranking within a group of animals where individuals are ranked based on power or status, with dominant individuals holding higher ranks.

  • Dominant

    Dominant

    Referring to a trait or allele that is expressed over another, recessive allele, in a heterozygous individual.

  • Dominant allele

    Dominant allele

    An allele that expresses its phenotype even when only one copy is present in a heterozygous individual.

  • Dormancy

    Dormancy

    A state in which an organism or seed temporarily stops growing or metabolizing, often as a response to adverse environmental conditions.

  • Dormant

    Dormant

    Describes an organism or seed in a state of dormancy, where metabolic processes are slowed down or inactive.