Monoplont see haplont

monorchic a. [Gr. monos, one; orchis, testicle] Having one testis. see diorchic.

monosiphonous a. [Gr. monos, one; siphon, tube] (CNID: Hy-drozoa) Having a single central tube as in the hydrocaulus.

monosome n. [Gr. monos, one; soma, body] 1. A chromosome lacking an allele. see polysome. 2. A single ribo-some bound to messenger RNA.

monosomic a. [Gr. monos, one; soma, body] Lacking one chromosome of a normal complement (somatic number is

monospermy n. [Gr. monos, one; sperma, seed] One sperm fertilizing an ovum; normal fertilization of an ovum.

monostich n. [Gr. monos, one; stichos, row] 1. Cells arranged in a row along one side of an axis. 2. (NEMATA: Adenopho-rea) Esophagi in Stichosomida (=Trichocephalida; Mer-mithida) in which the cells are external to the esophagus and along one side. monostichous a. see distich.

monostigmatous a. [Gr. monos, single; stigma, mark] Having one stigma only.

monostome n. [Gr. monos, one; stoma, mouth] (PLATY: Tre-matoda) A fluke lacking a ventral sucker.

monostome cercaria (PLATY: Trematoda) A cercaria with a muscular oral sucker anteriorly and no ventral sucker; encysts on objects in water.

monothalamous a. [Gr. monos, one; thalamos, chamber] Unilocular; single chambered. see monothecal.

monothecal a. [Gr. monos, one; theke, case] 1. Having one chamber or loculus. see monothalamous. 2. (ANN: Poly-chaeta) Having only one spermatheca. see polythecal.

monothely n. [Gr. monos, one; thelys, woman] Polyandry, with one female being fertilized by many males. mono-thelious a.

monothetic a. [Gr. monos, one; tithenai, to place] Pertaining to taxa based on only one or a few characters. see poly-thetic.

monotrochous a. [Gr. monos, one; trochous, wheel] (ARTHRO) Having the trochanter composed of a single piece.

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