| slovo | definícia |
dimorphism
(encz) | dimorphism,dimorfie n: Zdeněk Brož |
dimorphism
(encz) | dimorphism,dimorfismus n: Zdeněk Brož |
Dimorphism
(gcide) | Dimorphism \Di*mor"phism\, n. [Cf. F. dimorphisme.]
1. (Biol.) Difference of form between members of the same
species, as when a plant has two kinds of flowers, both
hermaphrodite (as in the partridge berry), or when there
are two forms of one or both sexes of the same species of
butterfly.
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Dimorphism is the condition of the appearance of the
same species under two dissimilar forms. --Darwin.
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2. (Crystallog.) Crystallization in two independent forms of
the same chemical compound, as of calcium carbonate as
calcite and aragonite.
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dimorphism
(wn) | dimorphism
n 1: (chemistry) the property of certain substances that enables
them to exist in two distinct crystalline forms
2: (biology) the existence of two forms of individual within the
same animal species (independent of sex differences) |
| | podobné slovo | definícia |
sexual dimorphism
(encz) | sexual dimorphism,pohlavní dvojtvárnost n: [bio.] Pino |
Dimorphism
(gcide) | Dimorphism \Di*mor"phism\, n. [Cf. F. dimorphisme.]
1. (Biol.) Difference of form between members of the same
species, as when a plant has two kinds of flowers, both
hermaphrodite (as in the partridge berry), or when there
are two forms of one or both sexes of the same species of
butterfly.
[1913 Webster]
Dimorphism is the condition of the appearance of the
same species under two dissimilar forms. --Darwin.
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2. (Crystallog.) Crystallization in two independent forms of
the same chemical compound, as of calcium carbonate as
calcite and aragonite.
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Isodimorphism
(gcide) | Isodimorphism \I`so*di*mor"phism\, n.
Isomorphism between the two forms severally of two dimorphous
substances.
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Seasonal dimorphism
(gcide) | Seasonal \Sea"son*al\, a.
1. Of or pertaining to the seasons.
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2. Occurring or being used in a specific season; as, seasonal
items for sale.
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Seasonal dimorphism (Zool.), the condition of having two
distinct varieties which appear at different seasons, as
certain species of butterflies in which the spring brood
differs from the summer or autumnal brood.
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Sexual dimorphism
(gcide) | Sexual \Sex"u*al\, a. [L. sexualis, fr. sexus sex: cf. F.
sexuel.]
Of or pertaining to sex, or the sexes; distinguishing sex;
peculiar to the distinction and office of male or female;
relating to the distinctive genital organs of the sexes;
proceeding from, or based upon, sex; as, sexual
characteristics; sexual intercourse, connection, or commerce;
sexual desire; sexual diseases; sexual generation.
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Sexual dimorphism (Biol.), the condition of having one of
the sexes existing in two forms, or varieties, differing
in color, size, etc., as in many species of butterflies
which have two kinds of females.
Sexual method (Bot.), a method of classification proposed
by Linnaeus, founded mainly on difference in number and
position of the stamens and pistils of plants.
Sexual selection (Biol.), the selective preference of one
sex for certain characteristics in the other, such as
bright colors, musical notes, etc.; also, the selection
which results from certain individuals of one sex having
more opportunities of pairing with the other sex, on
account of greater activity, strength, courage, etc.;
applied likewise to that kind of evolution which results
from such sexual preferences. --Darwin.
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In these cases, therefore, natural selection seems
to have acted independently of sexual selection.
--A. R.
Wallace.
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