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The ZW sex-determination system is a chromosomal system that determines the sex of offspring in birds, some fish and crustaceans such as the giant river prawn, some insects (including butterflies and moths), the schistosome family of flatworms, and some reptiles, e.g. majority of snakes, lacertid lizards and monitors, including Komodo dragons.
In those species, there is one sex chromosome, Z. Males have two Z chromosomes, whereas females have one Z. Males are ZZ, while females are ZO. [1] [2] [3] The ancestor of Lepidoptera and Trichoptera had ZO sex determination, which became a ZW sex-determination system in the largest clade, Ditrysia, as well as in Tischerioidea. Some of the ZW ...
Two use homomorphic male heterogamety, one uses XX/XY, one uses ZZ/ZW. Remarkably, the X and Z chromosomes are homologous, and the Y and W as well. Dmrt1 is on autosome 1 and not sex-linked. This means that an XX female individual is genetically similar to a ZZ male individual, and an XY male individual is to a ZW female individual.
Born right smack on the cusp of millennial and Gen Z years (ahem, 1996), I grew up both enjoying the wonders of a digital-free world—collecting snail shells in my pocket and scraping knees on my ...
Gen Z. Gen Z was born between 1997 and 2012 and is considered the first generation to have largely grown up using the internet, modern technology and social media. Members of Gen Z are sometimes ...
Generation Z (often shortened to Gen Z), also known as Zoomers, [1] [2] [3] is the demographic cohort succeeding Millennials and preceding Generation Alpha.Researchers and popular media use the mid-to-late 1990s as starting birth years and the early 2010s as ending birth years, with the generation most frequently being defined as people born from 1997 to 2012.
A female entrepreneur who succeeds in the male-dominated business world, an empowered woman. Popularized in 2014 by Sophia Amorusos's autobiography #GIRLBOSS. [58] glaze To hype, praise, or compliment someone so much that it becomes annoying or cringeworthy. [59] [60] [61] glizzy A hot dog.
Zonotrichia is a genus of five extant American sparrows of the family Passerellidae. [1] Four of the species are North American , but the rufous-collared sparrow breeds in highlands from the extreme southeast of Mexico to Tierra del Fuego , and on Hispaniola .