Zebra F Refill Ballpoint Pen for F-301, F-701, Expandz & Spiral. Pack of 12 Black

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A zebra's diet is mostly grasses and sedges, but they will opportunistically consume bark, leaves, buds, fruits, and roots. Compared to ruminants, zebras have a simpler and less efficient digestive system. Nevertheless, they can subsist on lower-quality vegetation. Zebras may spend 60–80% of their time feeding, depending on the availability of vegetation. [8] [28] The plains zebra is a pioneer grazer, mowing down the upper, less nutritious grass canopy and preparing the way for more specialised grazers, which depend on shorter and more nutritious grasses below. [85]

When close relatives mate, progeny may exhibit the detrimental effects of inbreeding depression. Inbreeding depression is predominantly caused by the homozygous expression of recessive deleterious alleles. [91] For zebrafish, inbreeding depression might be expected to be more severe in stressful environments, including those caused by anthropogenic pollution. Exposure of zebrafish to environmental stress induced by the chemical clotrimazole, an imidazole fungicide used in agriculture and in veterinary and human medicine, amplified the effects of inbreeding on key reproductive traits. [92] Embryo viability was significantly reduced in inbred exposed fish and there was a tendency for inbred males to sire fewer offspring. Pharmacometrics uses data from preclinical experiments and clinical trials to characterize the pharmacological processes that are underlying the relation between the drug dose and its response or clinical outcome. These can be for example the drug absorption in or clearance from the body, or its interaction with the target to achieve a certain effect. By quantifying these processes, their behaviour after different doses or in different patients can be understood and predicted to new doses or patients.Xi Y, Noble S, Ekker M (June 2011). "Modeling neurodegeneration in zebrafish". Current Neurology and Neuroscience Reports. 11 (3): 274–282. doi: 10.1007/s11910-011-0182-2. PMC 3075402. PMID 21271309. Further information: Equine anatomy Skeleton of a Grévy's zebra at the State Museum of Natural History Karlsruhe Parinov S, Kondrichin I, Korzh V, Emelyanov A (October 2004). "Tol2 transposon-mediated enhancer trap to identify developmentally regulated zebrafish genes in vivo". Developmental Dynamics. 231 (2): 449–459. doi: 10.1002/dvdy.20157. PMID 15366023. Kocher TD, Jeffery WR, Parichy DM, Peichel CL, Streelman JT, Thorgaard GH (2005). "Fish models for studying adaptive evolution and speciation". Zebrafish. 2 (3): 147–156. doi: 10.1089/zeb.2005.2.147. PMID 18248189. S2CID 18940475. McCluskey BM, Postlethwait JH (March 2015). "Phylogeny of zebrafish, a "model species", within Danio, a "model genus" ". Molecular Biology and Evolution. 32 (3): 635–652. doi: 10.1093/molbev/msu325. PMC 4327152. PMID 25415969.

In late 2003, transgenic zebrafish that express green, red, and yellow fluorescent proteins became commercially available in the United States. The fluorescent strains are tradenamed GloFish; other cultivated varieties include "golden", "sandy", "longfin" and "leopard". Guttridge N (2012). "Targeted gene modification can rewrite zebrafish DNA". Nature. doi: 10.1038/nature.2012.11463. S2CID 87708919. Zebras can be found in numerous protected areas and parks, which are aiming to help halt the decline, offer access to water, and increase their chances of survival. Interesting Zebra Facts 1. Their stripes are uniqueIn 2009, researchers at the Institute of Genomics and Integrative Biology in Delhi, India, announced the sequencing of the genome of a wild zebrafish strain, containing an estimated 1.7 billion genetic letters. [72] [73] The genome of the wild zebrafish was sequenced at 39-fold coverage. Comparative analysis with the zebrafish reference genome revealed over 5 million single nucleotide variations and over 1.6 million insertion deletion variations. The zebrafish reference genome sequence of 1.4GB and over 26,000 protein coding genes was published by Kerstin Howe et al. in 2013. [74] Mitochondrial DNA [ edit ] Zebras are social animals and live together in large groups, called herds. As they migrate to new feeding grounds, ‘super herds’ may form consisting of thousands of individuals. They may team up with other grazers on their travels, too, such as antelope and wildebeest. Mending Broken Hearts (2011) British Heart Foundation TV ad". British Heart Foundation via YouTube. January 31, 2011. Archived from the original on 2021-11-17 . Retrieved November 15, 2012. However, the grevy’s zebra lives primarily alone, or in loose herds. The males have territories which they protect from others, while females and their foals move freely between these territories. 6. Plains zebra migrate and form super herds

Renshaw SA, Trede NS (January 2012). "A model 450 million years in the making: zebrafish and vertebrate immunity". Disease Models & Mechanisms. 5 (1): 38–47. doi: 10.1242/dmm.007138. PMC 3255542. PMID 22228790. a b Van Wijk RC, Krekels EH, Hankemeier T, Spaink HP, Van der Graaf PH (2017). "Systems pharmacology of hepatic metabolism in zebrafish larvae". Drug Discovery Today: Disease Models. 22: 27–34. doi: 10.1016/j.ddmod.2017.04.003. The most common species is the plains zebra, which roams grasslands and woodland of eastern and southern Africa. The Grevy’s zebra can be found in dry, semi-desert areas of Kenya and Ethiopia, and the mountain zebra lives in mountainous and hilly habitats in Namibia, Angola and South Africa. Zebrafish are omnivorous, primarily eating zooplankton, phytoplankton, insects and insect larvae, although they can eat a variety of other foods, such as worms and small crustaceans, if their preferred food sources are not readily available. [16]

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Zebra’s Self-Service Center is your go-to spot for online tools, resources and support you need to get answers right away. Explore ways to get support to common device issues at a glance. a b Bergen DJ, Kague E, Hammond CL (2019). "Zebrafish as an Emerging Model for Osteoporosis: A Primary Testing Platform for Screening New Osteo-Active Compounds". Frontiers in Endocrinology. 10: 6. doi: 10.3389/fendo.2019.00006. PMC 6361756. PMID 30761080. Research with D. rerio has yielded advances in the fields of developmental biology, oncology, [34] toxicology, [25] [35] [36] reproductive studies, teratology, genetics, neurobiology, environmental sciences, stem cell research, regenerative medicine, [37] [38] muscular dystrophies [39] and evolutionary theory. [5] Model characteristics [ edit ]