adj
Undergoing meiosis but without achieving chiasma
n
(biology) A nonsexual gamete; a gamete involved in asexual reproduction
n
Synonym of autosporogenesis
n
(biology) A eukaryotic cell with two flagella; thought to be the ancestor of all plants.
adj
Of or relating to a blastospore.
n
The formation of cercarias
adj
(biology, of an egg) Enclosed in a protective shell that limits the interchange of fluids
n
(biochemistry) The formation and development of coccoliths
n
(cytology) A parasite, especially a protozoon, living within a cell
n
(biology) The outer cellular covering of the hexacanth embryo of a tapeworm that forms the inner part of the eggshell
n
(anatomy) The axoneme on the flagella of a spermatozoon.
n
(biology) The semifluid, granular interior of certain unicellular organisms, such as the inner layer of sarcode in the amoeba.
n
(cytology) A reproductive cell (sperm in males or eggs in females), having only half of a complete set of chromosomes.
n
(cytology) A diploid germ cell that divides by meiosis into a gamete.
n
A germ cell that divides into gametocytes during gametogenesis.
n
(biology) The stage in the life cycle of sporozoans in which gametes are formed
adj
That resembles a gamete
n
Alternative form of gemmule (in various senses) [(archaic) Synonym of gemma (“an asexual reproductive structure, as found in animals such as hydra (genus Hydra) and plants such as liverworts (division Marchantiophyta), consisting of a cluster of cells from which a new individual can develop”)]
n
(biology) The small mass of cells from which a part of an organism develops, or a macroscopic but immature form of that part; a bud.
n
(biology) A long-lived germ cell responsible for spermatogenesis in males and oogenesis in females
adj
Undergoing hypersporulation
n
A bacterium that undergoes hypersporulation
n
A substance from the egg yolk of osseous fishes.
n
An albuminous substance found in fish eggs.
n
(biology, dated) The attraction-sphere of a spermatid or of an oocyte.
n
(biology) Either of a pair of conjugating gametes that are of the same size and structure
n
(cytology) The larger of a pair of conjugating gametes; often the female.
n
The female gametocyte (or the mother cell that produces it)
n
(botany) The gametogenesis of macrogametes
n
(biology) A relatively large frustule
n
(botany) The development of a megaspore into an embryo sac.
n
A haploid spore produced by meiosis
n
(biology) The gamete of a protist produced by schizogony
n
(botany) The gametogenesis of microgametes
n
(biology) A perinuclear complex of microtubules that protects the nucleus of a cell from damage by ultraviolet light
n
In protozoa, a microscopic cell that undergoes asexual division
n
(obsolete) One of the minute granules embedded in the hyaline plasm of the protoplasm of vegetable cells.
n
An apical attachment organelle present in archigregarines
adj
(biology) Relating to myxodiaspory
n
The oogonium of a charophyte.
n
The female gamete; the egg cell or oosphere.
n
(biology) A mass of protoplasm at one end of an insect egg
n
(botany) A large nonmotile egg cell formed in an oogonium and ready for fertilization
n
Alternative spelling of oophore [(biology) A form of some ferns and mosses that bear sexual fruit]
n
Alternative spelling of oophyte [(obsolete, biology) gametophyte]
n
Alternative spelling of oosphere [(botany) A large nonmotile egg cell formed in an oogonium and ready for fertilization]
n
An organelle, in microsporidians, that swells with water, and exerts pressure to rupture the polar cap and evert the polar tube through which the sporoplasm escapes to infect the host.
n
(botany) A single seed that contains multiple embryos.
n
(zoology) An egg-like germ produced by the agamic females of some insects and other animals, and by the larvae of certain insects. It is capable of development without fertilization.
n
A cell that divides by schizogony.
n
(biology) A haploid cell, produced by meiosis of a spermatocyte, that develops into a spermatozoon
n
(biology) One of the cells formed by the division of the spermospore, each of which is destined to become a spermatozoid; a spermatocyte; a spermatoblast.
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