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Referring to various aspects of asexual reproduction:
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Figurative uses of the biological senses
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Virgin birth, in reference to the Virgin Mary and Jesus Christ.
definition
Referring to various aspects of asexual reproduction:
definition
Figurative uses of the biological senses
definition
Virgin birth, in reference to the Virgin Mary and Jesus Christ.
Parthenogenesis is of normal occurrence in the life-cycle of many Hymenoptera.
The offspring of the virgin females are in most of these instances females; but among the bees and wasps parthenogenesis occurs normally and always results in the development of males, the " queen " insect laying either a fertilized or unfertilized egg at will.
The only one of these possible modes of reproduction not known to occur in Hydromedusae is parthenogenesis.
He supports parthenogenesis in some plants.
Parthenogenesis is frequent.
They are the most resistant to unfavourable conditions of environment, and are able, by a process of parthenogenesis, to give rise to ordinary, indifferent forms again, which can repopulate the gnat.
Parthenogenesis, or the development of an embryo from an egg-cell without the latter having been fertilized has been described in species of Thalictrum, Antennaria and Alchemilla.
The large amount of salt in the water makes both fauna and flora of the lake scanty; there are a few algae, the larvae of an Ephydra and of a Tipula fly, specimens of what seems to be Corixa decolor, and in great quantities, so as to tint the surface of the water, the brine shrimp, Artemia salina (or gracilis or fertilis), notable biologically for the rarity of males, for the high degree of parthenogenesis and for apparent interchangeableness with the Branchipus.
Parthenogenesis is prevalent in the Branchiopoda and Ostracoda, often in more or less definite seasonal alternation with sexual reproduction.
If there is no male the female mantid can still produce an egg sac by a process called parthenogenesis.
If the germcells are differentiated, the offspring arises by syngamy or sexual union of the ordinary type between an ovum and spermatozoon, so-called fertilization of the ovum, or by parthenogenesis, i.e.
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