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  2. Blood type distribution by country - Wikipedia

    en.wikipedia.org/wiki/Blood_type_distribution_by...

    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).

  3. List of countries by suicide rate - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    Canada, a country with a comparatively low suicide rate overall at 10.3 incidents per 100,000 people in 2016, exhibits one such discrepancy. When comparing the suicide rate of Indigenous peoples in Canada, the rate of suicide increases to 24.3 incidents per 100,000 people in 2016, [18] a rate among the ten highest in the world.

  4. List of states with nuclear weapons - Wikipedia

    en.wikipedia.org/wiki/List_of_states_with...

    Map of nuclear-armed states of the world NPT -designated nuclear weapon states (China, France, Russia, United Kingdom, United States) Other states with nuclear weapons (India, North Korea, Pakistan) Other states presumed to have nuclear weapons (Israel) NATO or CSTO member nuclear weapons sharing states (Belgium, Germany, Italy, Netherlands, Turkey, Belarus) States formerly possessing nuclear ...

  5. Multiple sclerosis - Wikipedia

    en.wikipedia.org/wiki/Multiple_sclerosis

    Multiple sclerosis. Variable, including almost any neurological symptom or sign, with autonomic, visual, motor, and sensory problems being the most common. [1] Multiple sclerosis (MS) is an autoimmune disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged. [3] Being a demyelinating disease, MS disrupts ...

  6. Down syndrome - Wikipedia

    en.wikipedia.org/wiki/Down_syndrome

    Trisomy 21. Down syndrome (also known by the karyotype 47,XX,+21 for females and 47,XY,+21 for males) [98] is mostly caused by a failure of the 21st chromosome to separate during egg or sperm development, known as nondisjunction. [91] As a result, a sperm or egg cell is produced with an extra copy of chromosome 21; this cell thus has 24 ...

  7. Biology and sexual orientation - Wikipedia

    en.wikipedia.org/wiki/Biology_and_sexual_orientation

    By way of analogy, the allele (a particular version of a gene) which causes sickle cell disease when two copies are present, also confers an adaptive advantage when one copy is present by providing resistance to malaria with non-symptomatic sickle cell trait—which is known as "heterozygote advantage".

  8. Member states of the United Nations - Wikipedia

    en.wikipedia.org/wiki/Member_states_of_the...

    This is an accepted version of this page This is the latest accepted revision, reviewed on 19 September 2024. For the League of Nations, see Member states of the League of Nations. 193 United Nations member states 2 UN General Assembly observer states (the Holy See [a] and the State of Palestine) 2 eligible non-member states (the Cook Islands and Niue) 17 non-self-governing territories ...

  9. Schistosomiasis - Wikipedia

    en.wikipedia.org/wiki/Schistosomiasis

    Schistosomiasis, also known as snail fever, bilharzia, and Katayama fever, [1][2][9] is a disease caused by parasitic flatworms called schistosomes. [5] The urinary tract or the intestines may be infected. [5] Symptoms include abdominal pain, diarrhoea, bloody stool, or blood in the urine. [5] Those who have been infected for a long time may ...