Arrhenotoky or
arrhenotokous parthenogenesis is a form of
parthenogenesisParthenogenesis is an asexual form of reproduction found in females where growth and development of embryos occurs without fertilization by a male. In plants, parthenogenesis means development of an embryo from an unfertilized egg cell, and is a component process of apomixis...
in which unfertilized
eggAn ovum is a haploid female reproductive cell or gamete. Both animals and embryophytes have ova. The term ovule is used for the young ovum of an animal, as well as the plant structure that carries the female gametophyte and egg cell and develops into a seed after fertilization...
s develop into haploid males.
This form is observed in some marine
invertebrateAn invertebrate is an animal without a vertebral column. The group includes 95% of all animal species — all animals except those in the Chordate subphylum Vertebrata ....
s,
beetleBeetles are the group of insects with the largest number of known species. They are classified in the order Coleoptera , which contains more described species than in any other order in the animal kingdom, constituting about 25% of all known life-forms...
s,
scorpionScorpions are predatory arthropod animals of the order Scorpiones within the class Arachnida. There are about 2,000 species of scorpions, found widely distributed south of about 49° N, except New Zealand and Antarctica...
s,
miteMites, along with ticks, belong to the subclass Acarina and the class Arachnida. Mites are among the most diverse and successful of all the invertebrate groups. They have exploited an incredible array of habitats, and because of their small size most go totally unnoticed...
s,
beeBees are flying insects closely related to wasps and ants, and are known for their role in pollination and for producing honey and beeswax. Bees are a monophyletic lineage within the superfamily Apoidea, presently classified by the unranked taxon name Anthophila...
s, etc.
For some invertebrates it is a form of sex determination: males are produced parthenogenetically, while diploid females are produced biparentally from fertilized eggs.
In the case of the honeybee, the queen stores sperm and can lay both fertilized and unfertilized eggs.
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Arrhenotoky or
arrhenotokous parthenogenesis is a form of
parthenogenesisParthenogenesis is an asexual form of reproduction found in females where growth and development of embryos occurs without fertilization by a male. In plants, parthenogenesis means development of an embryo from an unfertilized egg cell, and is a component process of apomixis...
in which unfertilized
eggAn ovum is a haploid female reproductive cell or gamete. Both animals and embryophytes have ova. The term ovule is used for the young ovum of an animal, as well as the plant structure that carries the female gametophyte and egg cell and develops into a seed after fertilization...
s develop into haploid males.
This form is observed in some marine
invertebrateAn invertebrate is an animal without a vertebral column. The group includes 95% of all animal species — all animals except those in the Chordate subphylum Vertebrata ....
s,
beetleBeetles are the group of insects with the largest number of known species. They are classified in the order Coleoptera , which contains more described species than in any other order in the animal kingdom, constituting about 25% of all known life-forms...
s,
scorpionScorpions are predatory arthropod animals of the order Scorpiones within the class Arachnida. There are about 2,000 species of scorpions, found widely distributed south of about 49° N, except New Zealand and Antarctica...
s,
miteMites, along with ticks, belong to the subclass Acarina and the class Arachnida. Mites are among the most diverse and successful of all the invertebrate groups. They have exploited an incredible array of habitats, and because of their small size most go totally unnoticed...
s,
beeBees are flying insects closely related to wasps and ants, and are known for their role in pollination and for producing honey and beeswax. Bees are a monophyletic lineage within the superfamily Apoidea, presently classified by the unranked taxon name Anthophila...
s, etc.
For some invertebrates it is a form of sex determination: males are produced parthenogenetically, while diploid females are produced biparentally from fertilized eggs.
In the case of the honeybee, the queen stores sperm and can lay both fertilized and unfertilized eggs. The unfertilized eggs developed into haploid
drone-Nature:The male caste of social Hymenopterans, such as a* Drone * male wasp* male antTo be tired or mad-Vehicles:A teleoperated or autonomous vehicle:* Unmanned aerial vehicles* Target drones* Remotely operated underwater vehicles...
s by arrhenotoky.