| 释义 |
haplo-
combining form of Gr. ἁπλό-ας, contr. ἁπλοῦς single, simple, as in haplocardiac |hæpləʊˈkɑːdɪæk|, a. [Gr. καρδία heart], having a heart of simple structure; belonging to the Haplocardia or Brachiopoda. ‖ Haˈplocerus [Gr. κέρας horn], generic name of the Rocky Mountain sheep; hence haˈplocerine a. haplocyemate |-saɪˈiːmət|, a. [Gr. κύηµα embryo], developed directly from a more or less elongated gastrula (Cent. Dict. cites J. A. Ryder). haplomorphic, -ous |-ˈmɔːfɪk, -əs|, adjs. [Gr. µορϕή shape], of simple form; belonging to the Haplomorpha, a division of medusans and also, in some classifications, of gastropods. haplopetalous |-ˈpɛtələs| a., monopetalous; also, having a single row of petals (Syd. Soc. Lex. 1886). ˈhaplophase Biol., the phase in the life-cycle of an organism when the nuclei are haploid. ˈhaplopore Zool., an isolated pore on the surface of the theca of certain cystoids (order Diploporita) in which the pores usu. occur in pairs; also, a thecal canal that ends in one of these pores. haplostemonous |-ˈstiːmənəs|, a. Bot. [Gr. στήµων stamen], having a single circle or row of stamens. haplotomy |hæˈplɒtəmɪ| [Gr. ἁπλοτοµία], a simple cutting or incision (Mayne Expos. Lex. 1854).
1925E. B. Wilson Cell (ed. 3) 1132 Haplophase, that phase of the life-history, particularly in the antithetic alternation of generations in plants, in which the nuclei are haploid. 1957Fischer & Holton Biol. & Control Smut Fungi vii. 245 The point at which the haploid nuclei are reunited in conjugate association determines the duration of the haplophase.
1899Rep. Brit. Assoc. 1898 917 The simple or irregular haplopores become connected in pairs (diplopores). 1962D. Nichols Echinoderms xi. 138 The diploporite Aristocystites..is flask-shaped, with a theca composed of many irregularly arranged plates pierced by haplopores and diplopores.
1880Gray Struct. Bot. vi. §2. 177 note, The andrœcium or the blossom is said to be Isostemonous or Haplostemonous when the stamens are of one series equal in number to that of the ground-plan of the blossom.
b. Genetics. Used as a prefix to designate the presence of only one of a pair of homologous chromosomes.
1924T. H. Morgan in E. V. Cowdray Gen. Cytol. xi. 720 The offspring are of two kinds, one kind normal with two chromosome IV's, the other kind with only one IV. These haplo-IV flies also give an interesting result if crossed out to a stock that carries a recessive factor in chromosome IV. 1932Sinnott & Dunn Princ. Genet. (ed. 2) ix. 185 One whole IV chromosome is missing from the ‘Diminished’ flies; they have only one of the pair of small chromosomes and are thus known as haplo-IV individuals. |