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Sickle cell disease (SCD), also simply called sickle cell, is a group of hemoglobin-related blood disorders typically inherited. [2] The most common type is known as sickle cell anemia. [2] It results in an abnormality in the oxygen-carrying protein haemoglobin found in red blood cells. [2] This leads to a rigid, sickle -like shape under ...
The distribution of haplogroup E1a lineages in Portugal was independent of the distribution of the younger and more ubiquitous E1b1a. [26] this distribution is consistent with a prehistoric migration from Africa to Iberia, possibly alongside mtDNA haplogroup U6. In Majorcans, Sub-Saharan Y-DNA lineage E-V38 was found at a total of 3.2% (2/62). [27]
This list concerns blood type distribution between countries and regions. Blood type (also called a blood group ) is a classification of blood , based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs).
Since 2015, the WHO European Region has been free of malaria. The last country to report an indigenous malaria case was Tajikistan in 2014. [17] There are about 1300–1500 malaria cases per year in the United States. [38] The United States eradicated malaria as a major public health concern in 1951, [211] though small outbreaks persist. [212]
Haplogroup J-M172. In human genetics, Haplogroup J-M172 or J2[Phylogenetics 1] is a Y-chromosome haplogroup which is a subclade (branch) of haplogroup J-M304. [Phylogenetics 2] Haplogroup J-M172 is common in modern populations in Western Asia, Central Asia, South Asia, Southern Europe, Northwestern Iran and North Africa.
The genetic divergence of R1a (M420) is estimated to have occurred 25,000 [2] years ago, which is the time of the last glacial maximum.A 2014 study by Peter A. Underhill et al., using 16,244 individuals from over 126 populations from across Eurasia, concluded that there was "a compelling case for the Middle East, possibly near present-day Iran, as the geographic origin of hg R1a". [2]
Gene structure and function, variation, and distribution are studied within the context of the cell, the organism (e.g. dominance), and within the context of a population. Genetics has given rise to a number of subfields, including molecular genetics, epigenetics, and population genetics.
This is a list of countries and other inhabited territories of the world by total population, based on estimates published by the United Nations in the 2024 revision of World Population Prospects. It presents population estimates from 1950 to the present. [2]