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The table below shows the human Y-chromosome DNA haplogroups, based on relevant studies, for various ethnic [dubious – discuss] and other notable groups from Europe. The samples are taken from individuals identified with the ethnic and linguistic designations shown in the first two columns; the third column gives the sample size studied; and ...
The Malaria Atlas Project aims to map global levels of malaria, providing a way to determine the global spatial limits of the disease and to assess disease burden. [218] [219] This effort led to the publication of a map of P. falciparum endemicity in 2010 and an update in 2019. [220] [221] [222] As of 2021, 84 countries have endemic malaria. [17]
Genetics is the study of genes, genetic variation, and heredity in organisms. [1][2][3] It is an important branch in biology because heredity is vital to organisms' evolution. Gregor Mendel, a Moravian Augustinian friar working in the 19th century in Brno, was the first to study genetics scientifically.
Eukaryotes are organisms that range from microscopic single cells, such as picozoans under 3 micrometres across, [6] to animals like the blue whale, weighing up to 190 tonnes and measuring up to 33.6 metres (110 ft) long, [7] or plants like the coast redwood, up to 120 metres (390 ft) tall. [8]
Deaths. 6.3 million (2015) [12] Stroke (also known as a cerebrovascular accident (CVA) or brain attack) is a medical condition in which poor blood flow to the brain causes cell death. [5] There are two main types of stroke: ischemic, due to lack of blood flow, and. hemorrhagic, due to bleeding.
West Africans (e.g., Mende of Sierra Leone), bearing the Senegal sickle cell haplotype, [137] [125] may have migrated into Mauritania (77% modern rate of occurrence) and Senegal (100%); they may also have migrated across the Sahara, into North Africa, and from North Africa, into Southern Europe, Turkey, and a region near northern Iraq and ...
Lysosome. Centrosome. Cell membrane. The cell nucleus (from Latin nucleus or nuculeus 'kernel, seed'; pl.: nuclei) is a membrane-bound organelle found in eukaryotic cells. Eukaryotic cells usually have a single nucleus, but a few cell types, such as mammalian red blood cells, have no nuclei, and a few others including osteoclasts have many.
A group of about 50 rowdy teens ransacked a Los Angeles 7-Eleven Friday night, the second attack in the last two months at the store, according to media reports. The mob of 12- to 15-year-olds on ...