(meiosis)
121algae — algal, adj. /al jee/, n.pl., sing. alga / geuh/. any of numerous groups of chlorophyll containing, mainly aquatic eukaryotic organisms ranging from microscopic single celled forms to multicellular forms 100 ft. (30 m) or more long, distinguished… …
122disjunction — The normal separation of pairs of chromosomes at the anaphase stage of meiosis I or II. [dis + L. junctio, a joining, fr. jungo, pp. junctum, to join] * * * dis·junc·tion dis jəŋ(k) shən n the separation of chromosomes or chromatids during… …
123Cyclin A1 — Identifiers Symbols CCNA1; External IDs OMIM:  …
124Hans Marquardt (Botaniker) — Hans Ferdinand Marquardt (* 1. Oktober 1910 in Öhringen) ist ein deutscher Biologe, Botaniker und Forstwissenschaftler. Inhaltsverzeichnis 1 Leben und Wirken 2 Ehrungen 3 Publikationen (Auswahl) …
125Spore — For other uses, see Spore (disambiguation). Spores produced in a sporic life cycle. In biology, a spore is a reproductive structure that is adapted for dispersal and surviving for extended periods of time in unfavorable conditions. Spores form… …
126Polyploidy — occurs in cells and organisms when there are more than two homologous sets of chromosomes.Most organisms are normally diploid; polyploidy may occur due to abnormal cell division. It is most commonly found in plants. Haploidy may also occur as a… …
127Apomixis — Not to be confused with automixis or autogamy. This article deals almost exclusively with plants. For similar processes in animals and Oomycetes, see Parthenogenesis. In botany, apomixis was defined by Winkler as replacement of the normal… …
128Ovulation — is the process in a female s menstrual cycle by which a mature ovarian follicle ruptures and discharges an ovum (also known as an oocyte, female gamete, or casually, an egg). Ovulation also occurs in the estrous cycle of other female mammals,… …
