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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «H»:

  1. Homologous Homologous
    Homologous: The relationship between two chromosomes that are paired and so are homologs of each other. ...
  2. Homologous chromosomes Homologous chromosomes
    Homologous chromosomes: A pair of chromosomes containing the same gene sequences, each derived from one parent....
  3. Homosexual Homosexual
    Homosexual: A person sexually attracted to persons of the same sex. Homosexuals include males (gays) and females (lesbians). The term "homosexual" can also be an adjective....
  4. Homosexuality Homosexuality
    Homosexuality: Sexuality directed toward someone of the same sex....
  5. Homosexuality 1 Homosexuality 1
    Homosexuality 1: An alleged gene for human male homosexuality. See: Gay gene....
  6. Homotrisomy Homotrisomy
    Homotrisomy: Trisomy of the same chromosome. The occurrence of two children in the same family with trisomy 21 is an instance of homotrisomy. See also: Heterotrisomy....
  7. Homozygosity Homozygosity
    Homozygosity: The state of possessing two identical forms of a particular gene, one inherited from each parent. For example, a girl who is homozygous for cystic fibrosis (CF) received the CF gene from both of her parents and therefore she has CF. The opposite of homozygous is heterozygous, the poss...
  8. Homozygote Homozygote
    Homozygote: A person who has two identical forms of a particular gene, one inherited from each parent. For example, a girl who is a homozygote for cystic fibrosis (CF) received the CF gene from both of her parents and therefore has CF. The opposite of a homozygote is a heterozygote, a person who ha...
  9. Homozygous Homozygous
    Homozygous: Possessing two identical forms of a particular gene, one inherited from each parent....
  10. Honey bee allergy Honey bee allergy
    Honey bee allergy: Allergic reactions to stings of the honey bee (Apis mellifera). These reactions can include dizziness, itching, welts, massive swelling, trouble breathing, low blood pressure, shock, and even death. See: First Aid For Stinging Insect Allergies....
  11. Honey bee genome Honey bee genome
    Honey bee genome: The genetic complement of the honey bee (Apis mellifera). Its genome is relatively small -- about one-tenth the size of the human genome -- and contains about 300 million DNA base pairs. Sequencing of the bee genome began in 2003 and a draft of it was completed in 2004. The bee gen...
  12. Hong Kong flu Hong Kong flu
    Hong Kong flu: A pandemic of influenza A (H3N2) in 1968-69. This virus was first detected in Hong Kong in early 1968 and spread to the United States later that year. where it caused about 34,000 deaths, making it the mildest pandemic in the 20th century. Also known as Hong Kong influenza. There coul...
  13. Hong Kong influenza Hong Kong influenza
    Hong Kong influenza: See: Hong Kong flu....
  14. Hookworm Hookworm
    Hookworm: An intestinal parasite that usually causes diarrhea or cramps. Heavy infestation with hookworm can be serious for newborns, children, pregnant women, and persons who are malnourished. Hookworm infections occur mainly in tropical and subtropical climates and affect about 1 billion people --...
  15. Horace Albert Barker Horace Albert Barker
    Horace Albert Barker: See: Barker, Horace Albert....