parthenogenesis
Biology
(noun)
a form of asexual reproduction where growth and development of embryos occur without fertilization
Microbiology
Examples of parthenogenesis in the following topics:
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Types of Sexual and Asexual Reproduction
- Animals may reproduce asexually through fission, budding, fragmentation, or parthenogenesis.
- Parthenogenesis is a form of asexual reproduction where an egg develops into a complete individual without being fertilized.
- Parthenogenesis occurs in invertebrates such as water fleas, rotifers, aphids, stick insects, some ants, wasps, and bees.
- Bees use parthenogenesis to produce haploid males (drones) and diploid females (workers).
- Some vertebrate animals, such as certain reptiles, amphibians, and fish, also reproduce through parthenogenesis.
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Reproductive Cloning
- Parthenogenesis, or "virgin birth," occurs when an embryo grows and develops without the fertilization of the egg occurring; this is a form of asexual reproduction.
- An example of parthenogenesis occurs in species in which the female lays an egg.
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Animal Reproduction and Development
- In contrast, a form of asexual reproduction found in certain insects and vertebrates is called parthenogenesis where unfertilized eggs can develop into new offspring.
- This type of parthenogenesis in insects is called haplodiploidy and results in male offspring.
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Rickettsial Diseases
- Rickettsia found in Arthropods are generally associated with reproductive manipulation (such as parthenogenesis) to persist in host lineage.