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- mab-5
- C. elegans gene [see encoded homeodomain]
- Macrolide antibiotics
- Macromolecule
- A molecule with a molecular weight of several thousand or more. Proteins, nucleic acids, cellulose, and starch are macromolecules.
- Macronucleus
- Macrophage
- Macrophage colony-stimulating factor (M-CSF)
- MAD ("mitotic arrest defective")
- Mad cow disease
- Magnetic resonance imaging (MRI)
- Magnetoencephalography (MEG)
- Magnetoreceptors
- Magnetotaxis
- Major histocompatibility complex (MHC)
- A cluster of genes, some of whose products are involved in presenting antigens to T cells and also serve as the principal targets of graft rejection. Found in most, if not all, vertebrates. The MHC of humans is on chromosome 6 and is designated HLA. [diagram of the complex] [the class I and class II histocompatibility molecules]
- Malaria
- [Life cycle of Plasmodium vivax] [evading host immunity]
- Malignant
- Refers to a cell that cannot stop dividing; also to the tumor that results. Cancerous.
- Maltose
- Mammals
- orders of placental mammals
- Mandibulata
- Mangold, Hilde
- Marijuana
- Marine ecosystems
- Mars (life on?)
- Marsupial
- Any of the order of pouched mammals such as opossums, wombats, and kangaroos. [Discussion] [pregnancy and birth]
- Mast cell
- [role in allergies]
- Matrix
- (1) Extracellular material in which animal cells are embedded, especially those of connective tissue [More]. (2) Fluid contained within the inner membrane of mitochondria.
- Maximum sustainable yield
- Mayr, E.
- McClintock, Barbara
- [and transposons] [demonstration that genetic recombination of linked genes occurs by chromosome crossovers]
- MCM proteins ("minichromosome maintenance proteins")
- Mechanoreceptors
- Medulla
- Inner part of an organ.
- Medulla oblongata
- Megakaryocyte
- Megaspore
- Meiosis
- Melanocyte-stimulating hormone (MSH)
- Melanopsin
- Melatonin
- Membrane Attack Complex
- Memory
- [Implicit and Explicit] [and long-term potentiation (LTP)]
- Memory cells of immune system
- Mendel, G.
- [his monohybrid crosses] [his second rule]
- Meninges
- Menopause
- Menstrual cycle
- Meprobamate
- Meristem
- [in roots] [in stems]
- Merkel cells
- Meselson, M. S.
- Mesoderm
- Mesophyll
- Mesozoic era
- Metabolism
- Exchange of matter and energy between an organism and its environment and the transformation of this matter and energy within the organism.
[General discussion with links to specific examples] [Intermediary]
- Metabolite
- A substance used in or produced by metabolism.
- Metabolome
- Metagenomics
- Metamorphosis, insect
- Metaphase
- [in mitosis] [in meiosis I]
- Metastasis
- A secondary growth of malignant (cancer) cells away from the site of the primary tumor. [More]
- Metazoa (the animals)
- Methane
- a greenhouse gas
- Methanogens
- Methionine
- Methyl group
- [structure] [methylation of DNA] [methylation of histones]
- Michaelis-Menten constant
- Microglia
- Micron (µ)
- Micronucleus
- Microorganism
- An organism of microscopic size such as bacteria, protozoans, and many algae. Also called a microbe.
- Micropyle
- MicroRNAs (miRNAs)
- Microspore
- Microsporidia
- Microtubules
- Microvilli
- Mifepristone (RU486)
- [More] [and Birth Control]
- Miller, Stanley
- Millisievert (mSv)
- Mimicry
- Mineralocorticoids
- Minerals
- [nutritional requirements] [Recommended Dietary Allowances (RDAs)]
- Miniature Inverted-repeat Transposable Elements (MITEs)
- Miracidium
- Mismatch repair of DNA
- Mitochondrial Eve
- Mitochondrial stimulation factor (MSF)
- Mitochondrion
- [structure and functions] [genome] [diseases]
- Mitosis
- Nuclear division that follows duplication of the chromosomes, whereby each daughter nucleus has exactly the same chromosome content as the parent nucleus. [Discussion] [
and cell cycle]
- Mixtures
- Mole
- Molecular clocks
- Molecular weight
- Molecule
- Smallest particle of a covalently bonded element or compound that retains the properties of that substance.
- Mollusks
- Molt
- To shed the outer covering. [in insects] [disruptors as insecticides]
- Monoamine oxidase (MAO) inhibitors
- Monoclonal antibodies
- [for treatment of cancer]
- Monocots
- [stem structure]
- Monocyte
- Monoecious
- Having both female and male cones or flowers on the same plant. [More]
- Monoglyceride
- Glycerol carrying a single fatty acid.
- Monohybrid cross
- Monomer
- Simple molecular unit that can be linked with others to form a polymer. The glucose molecule is the monomer of starch.
- Monoplacophora
- Monosaccharide
- Monotremes
- Egg-laying mammals (Prototheria) [Discussion]
- Morgan, T. H.
- Morphology
- Study of structure.
- Mosaics, genetic
- Mosses
- Motor unit
- M-phase promoting factor (MPF)
- MPS-I (mucopolysaccharidosis I)
- Multiple alleles
- More than two alleles found at a give gene locus in a population. [example in plants] [example in humans]
- Multiple factors
- Nonallelic genes that affect the same trait in an additive fashion. [More]
- Multiple myeloma
- Multiple sclerosis
- [as autoimmune disease]
- Murchison meteorite
- Muscarinic acetylcholine receptors
- Muscles
- [Discussion of skeletal, cardiac, and smooth muscle] [testing the sliding-filament model of muscle contraction]
- Muscle spindles
- Muscular dystrophy
- Mutagen
- Agent that causes mutations. [Ionizing radiation] [Testing chemical mutagens in bacteria] [Testing chemical mutagens in mice]
- Mutation
- [general discussion]
[SUMMARY]
[and evolution] [germline vs somatic] [in B-cell antibody genes] [by transposons] [temperature-sensitive]
- Mutualism
- Myasthenia gravis
- myc
- [and Burkitt's lymphoma]
- Mycelium
- Mycobacteria
- [uptake by cells] [Mycobacterium leprae genome]
- Mycoplasma
- [genomes of]
- Mycorrhiza
- Myelin sheath
- Myeloid
- Refers to all the blood cells except the lymphocytes.
- Myeloma protein
- The immunoglobulin (antibody) produced by a cancerous clone of plasma cells. [View]
- Myeloperoxidase
- Myofibrils
- Myoneural junction (also called a neuromuscular junction)
- Myosin
- Myostatin
- Myriapoda
- Myxobacteria
- Myxoma virus