Expanded glossary of Cycad terms . 2014.
pre-mating isolation — Condition in which interbreeding between two or more populations is prevented by extrinsic factors effective before mating or fertilization. Cf. post mating isolation. See also reproductive isolation … Expanded glossary of Cycad terms
reproductive isolation — Often used specifically for the condition in which interbreeding between two or more populations is prevented by intrinsic (pre mating or post mating isolating mechanism) or extrinsic (geographic barrier) factors … Expanded glossary of Cycad terms
Reproductive isolation — An important concept in evolutionary biology, reproductive isolation is a category of mechanisms that prevent two or more populations from exchanging genes. The separation of the gene pools of populations, under some conditions, can lead to the… … Wikipedia
Species — In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is … Wikipedia
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… … Universalium
Evolution — This article is about evolution in biology. For other uses, see Evolution (disambiguation). For a generally accessible and less technical introduction to the topic, see Introduction to evolution. Part of a series on … Wikipedia
literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… … Universalium
heredity — /heuh red i tee/, n., pl. heredities. Biol. 1. the transmission of genetic characters from parents to offspring: it is dependent upon the segregation and recombination of genes during meiosis and fertilization and results in the genesis of a new… … Universalium
Animal sexual behaviour — This article is about the sexual behaviour of non human animals; see also Human sexuality and Sexual reproduction. Animal sexual behaviour takes many different forms, even within the same species. Among animals other than humans, researchers have … Wikipedia
