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The offspring produced by apomictic parthenogenesis are full clones of their mother, as in aphids. [23] Parthenogenesis involving meiosis is more complicated. In some cases, the offspring are haploid (e.g., male ants). In other cases, collectively called automictic parthenogenesis, the ploidy is restored to diploidy by various means. This is ...
Parthenogenesis is a mode of asexual reproduction in which offspring are produced by females without the genetic contribution of a male. Among all the sexual vertebrates, the only examples of true parthenogenesis, in which all-female populations reproduce without the involvement of males, are found in squamate reptiles (snakes and lizards). [1]
In 2023, a second clone of the original stallion, named Ollie, was born; this marked the first instance of multiple living clones of a single individual of an endangered species being alive at the same time. [128] Also in 2020, a clone named Elizabeth Ann was produced of a female black-footed ferret that had no living descendants. [129]
The list of organisms by chromosome count describes ploidy or numbers of chromosomes in the cells of various plants, animals, protists, and other living organisms.This number, along with the visual appearance of the chromosome, is known as the karyotype, [1] [2] [3] and can be found by looking at the chromosomes through a microscope.
Other terms include array, clone, type, or morph. Subfamily Teiinae: Ameiva – junglerunners (14 species) Ameivula – (11 species) Aspidoscelis – North American whiptail lizards (46 species) Aurivela – (2 species) Cnemidophorus – South American whiptail lizards (19 species) Contomastix – (6 species) Dicrodon – desert tegus (3 species)
It was concluded after DNA testing that the reproduction was parthenogenetic, as the female pup's DNA matched only one female who lived in the tank, and no male DNA was present in the pup. The pup was not a twin or clone of her mother, but rather, contained only half of her mother's DNA ("automictic parthenogenesis"). This type of reproduction ...
A. parthenogenetica, as its specific name suggests, is an obligate parthenogenetic organism, one that reproduces without sexual reproduction. Like other brine shrimp, A. parthenogenetica produces cysts that are highly resistant to environmental changes, including large changes in temperature and salinity, and the stress of drying out and exposure to UV radiation. [7]
Aphid giving birth by parthenogenesis, the live young growing from unfertilized eggs. Thelytoky (from the Greek θῆλυς thēlys "female" and τόκος tókos "birth") is a type of parthenogenesis and is the absence of mating and subsequent production of all female diploid offspring as for example in aphids.