unisexuality

unisexuality

* * *

      in biology, the condition of an organism or species capable of producing only male or female gametes (sex cells) but never both. A unisexual organism of a bisexual species is one in which the male and female gonads are found in separate individuals. In plants this condition is often called dioecism. A unisexual species is one in which all individuals are of the same sex. Some species of whiptail (racerunner) lizards, for example, are only female. New individuals grow from eggs that develop without fertilization ( parthenogenesis).

* * *


Universalium. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • unisexuality — unisexuality. См. однополость. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • unisexuality — noun see unisexual …   New Collegiate Dictionary

  • unisexuality — n. state of having one type of sexual organ; state of having either stamen or pistil (Botany) …   English contemporary dictionary

  • unisexuality — uni·sexuality …   English syllables

  • unisexuality — noun see unisexual I …   Useful english dictionary

  • однополость — unisexuality однополость. Hаличие у всех особей данного вида (популяции) либо у отдельной особи генеративных органов только одного типа и, соответственно, возможность участия каждой особи в воспроизводстве только в качестве либо самца, либо… …   Молекулярная биология и генетика. Толковый словарь.

  • unisexual — unisexuality, n. unisexually, adv. /yooh neuh sek shooh euhl/, adj. 1. of or pertaining to one sex only. 2. having only male or female organs in one individual, as an animal or a flower. 3. unisex. [1795 1805; UNI + SEXUAL] * * * …   Universalium

  • Spawn (biology) — The spawn (eggs) of a clownfish. The black spots are the eyes developing. Spawn refers to the eggs and sperm released or deposited, usually into water, by aquatic animals. As a verb, spawn refers to the process of releasing the eggs and sperm,… …   Wikipedia

  • unisexual — adjective Date: circa 1802 1. of, relating to, or restricted to one sex: a. male or female but not hermaphroditic b. diclinous < a unisexual flower > 2. unisex • unisexuality noun …   New Collegiate Dictionary

  • Darevskia Armeniaca — Darevskia armeniaca …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”