Science terms starting with Y

21 terms

  1. Y chromosome See: sex chromosome.
  2. YAC Abbreviation for yeast artificial chromosome.
  3. Yardang A wind-carved rock ridge feature found in desert environments.
  4. Yarder A machine used in yarding timber.
  5. Yarding The initial movement of logs from the point of felling to a central loading area or landing.
  6. Yarding unmerchantable material (YUM) A logging contract requirement to remove and pile unmerchantable woody material of a specified size.
  7. Yaw The rotation of a horizontal axis wind turbine around its tower or vertical axis.
  8. YDA Yesterday
  9. Year The period during which the Earth completes one revolution around the sun.
  10. yeast A unicellular ascomycete fungus, commonly found as a contaminant in plant tissue culture.
  11. yeast artificial chromosome (Abbreviation: YAC ). A vector which can be propagated in budding yeast (Saccharamyces pombe), consisting of the minimal elements required for a…
  12. Yeast artificial chromosome (YAC) Extremely large segments of DNA from another species spliced into DNA of yeast.
  13. yeast episomal vector (Abbreviation: YEp). A cloning plasmid vector for the yeast Saccharomyces cerevisiae maintained as an extrachromosomal nuclear DNA molecule.
  14. yeast extract A mixture of substances from yeast. See: organic complex ..
  15. Yellow Grease Second-hand cooking oil that can be used to produce biodiesel.
  16. Yellow Snow Snow given a golden or yellow appearance by the presence in it of pine, cypress pollen, or anthropogenic material or animal-produced material.
  17. Yield Yield is most commonly associated with a money market fund's return. "Current Yield" is based on daily return, "Effective Yield" on the annual compounded…
  18. Yolk sac Vital to the embryo for the formation of primordial and other cells that form the embryo. In mammals, it is small and devoid of a yolk.
  19. Young-of-year Refers to young (usually fish) produced in one reproductive year. Small fish, hatched from eggs spawned in the current year, are considered young-of-year…
  20. Younger Dryas interval of abrupt climate changes approximately 12,700-11,500 years ago. The name is derived from the Dryas plant, a cold-loving plant that pollen…
  21. Yurt An octagonal shaped shelter that originated in Mongolia, and traditionally made from leather or canvas for easy transportation.