sperm+of+fishes
41Kitefin shark — Temporal range: Middle Eocene–Present[1] …
42poison — poisoner, n. poisonless, adj. poisonlessness, n. /poy zeuhn/, n. 1. a substance with an inherent property that tends to destroy life or impair health. 2. something harmful or pernicious, as to happiness or well being: the poison of slander. 3.… …
43Natural selection — For other uses, see Natural Selection (disambiguation). Part of a series on Evolutionary Biology …
44Ovum — For other uses, see Ovum (disambiguation). Ovum A human ovum with corona radiata surrounding it An ovum (plural ova, from the Latin word ovum meaning egg …
45Kleptogamie — (gr. κλέπτειν kleptein „stehlen“ und γάμος gamos „Heirat“) bezeichnet eine Kopulationsstrategie, durch die sich männliche Tiere eine Paarung zu erschleichen versuchen.[1] Dabei parasitieren die kleptogamen Männchen Leistungen anderer Männchen,… …
46Polyspermy — In biology, polyspermy describes an egg that has been fertilized by more than one sperm. Diploid organisms normally contain two copies of each chromosome, one from each parent. The cell resulting from polyspermy, on the other hand, contains three …
47dormancy — /dawr meuhn see/, n. the state of being dormant. [1780 90; DORM(ANT) + ANCY] * * * ▪ biology Introduction state of reduced metabolic activity adopted by many organisms under conditions of environmental stress or, often, as in winter, when… …
48Mate Choice — is the process in which one organism chooses another one to mate with. The overall reason for mate choice in any species is to pick a mate that can provide better genetic material that will produce more fit offspring that are more likely to… …
49Hoplosternum littorale — Taxobox name = Hoplosternum littorale regnum = Animalia phylum = Chordata classis = Actinopterygii ordo = Siluriformes familia = Callichthyidae genus = Hoplosternum species = H. littorale binomial = Hoplosternum littorale binomial authority =… …
50gastropod — /gas treuh pod /, n. 1. any mollusk of the class Gastropoda, comprising the snails, whelks, slugs, etc. adj. 2. Also, gastropodous /ga strop euh deuhs/. belonging or pertaining to the gastropods. [1820 30; < NL Gast(e)ropoda a class of mollusks.… …
