Drosophila
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  Drosophila



Drosophila

   The fruit fly. One species, Drosophila melanogaster, is a favorite model organism in genetics and developmental biology.

RELATED TERMS
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Fruit
The fleshy or dry ripened ovary of a plant, enclosing the seed or seeds.

Fly
An order of the class Insecta. Wings, when present, number two and distinguish Diptera from other so-called flies, while the halteres, or reduced hindwings, separate Diptera from other insects with one pair of wings. The order includes the families Calliphoridae, Oestridae, Phoridae, Sarcophagidae, Scatophagidae, Sciaridae, SIMULIIDAE, Tabanidae, Therevidae, Trypetidae, CERATOPOGONIDAE; CHIRONOMIDAE; CULICIDAE; DROSOPHILIDAE; GLOSSINIDAE; MUSCIDAE; and PSYCHODIDAE.

Drosophila
The fruit fly. One species, Drosophila melanogaster, is a favorite model organism in genetics and developmental biology.

Model
Reproduction of structures made by pouring plaster or stone into a mold.

Organism
A living thing, such as an animal, a plant, a bacterium, or a fungus.

Genetics
The scientific study of heredity. Genetics pertains to humans and all other organisms. So, for example, there is human genetics, mouse genetics, fruitfly genetics, etc.



SIMILAR TERMS
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Drosera
A plant genus of the family Droseraceae, order Nepenthales, subclass Dilleniidae, class Magnoliopsida.

Drosophila genome
All of the genetic information contained in Drosophila, the fruitfly. The genomes of particular nonhuman organisms such as Drosophila have been studied for a number of reasons including the need to improve sequencing and analysis techniques. These nonhuman genomes also provide powerful sets of data against which to compare the human genome.

Drosophila Glue Protein
Glycosylated proteins which are part of the salivary glue that Drosophila larvae secrete as a means of fixing themselves to an external substrate for the duration of the pre-pupal and pupal period. The proteins which consist of at least eight polypeptides that are expressed during the third larval instar.

Drosophila Glue Proteins
Glycosylated proteins which are part of the salivary glue that Drosophila larvae secrete as a means of fixing themselves to an external substrate for the duration of the pre-pupal and pupal period. The proteins which consist of at least eight polypeptides that are expressed during the third larval instar.

Drosophila melanogaster
A species of fruit fly much used in genetics because of the large size of its chromosomes.

Drosophila melanogaster Proteins
Proteins that originate from insect species belonging to the genus DROSOPHILA. The proteins from the most intensely studied species of Drosophila, DROSOPHILA MALANOGASTER, are the subject of much interest in the area of MORPHOGENESIS and development.

Drosophila Proteins
Proteins that originate from insect species belonging to the genus DROSOPHILA. The proteins from the most intensely studied species of Drosophila, DROSOPHILA MALANOGASTER, are the subject of much interest in the area of MORPHOGENESIS and development.

Drosophila Son of Sevenless Protein
A guanine nucleotide exchange factor from DROSOPHILA. Sevenless refers to genetic mutations in DROSOPHILA that cause loss of the R7 photoreceptor which is required to see UV light.

Drosophilidae
A family of the order DIPTERA. These flies are generally found around decaying vegetation and fruit. Several species, because of their short life span, giant salivary gland chromosomes, and ease of culturing, have been used extensively in studies of heredity.

Drosphila SOS Protein
A guanine nucleotide exchange factor from DROSOPHILA. Sevenless refers to genetic mutations in DROSOPHILA that cause loss of the R7 photoreceptor which is required to see UV light.



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Dreams
Thoughts, visions, and other sensations that occupy the mind in sleep. Dreams occur during that part of sleep when there are rapid eye movements (REMs). We have 3 to 5 periods of REM sleep per night. They usually come at intervals of 1-2 hours and are quite variable in length. An episode of REM sleep may be brief and last but 5 minutes. Or it may be much longer and go for over an hour. About 20% of sleep is REM sleep. If you sleep 7-8 hours a night, perhaps an hour and half of that time, 90 minutes, is REM sleep. REM sleep is characterized by a number of other features besides REM, including rapid, low-voltage brain waves on the electroencephalographic (EEG) recording, irregular breathing and irregular heart rate and -- what may be most evident to someone else -- involuntary muscle jerks. Non-REM (NREM) sleep is dreamless sleep. During NREM, the brain waves on the EEG are typically slow and of high voltage, the breathing and heart rate are both slow and regular, the blood pressure is low, and the sleeper is relatively still. NREM sleep is divided into 4 stages of increasing depth. About 80% of sleep is NREM sleep. If you sleep 7-8 hours a night, all but maybe an hour and a half is spent in dreamless NREM sleep. Dreams are penetrable; it has been found experimentally that one can communicate with a person who is dreaming.

Dressler syndrome
Pericarditis (inflammation of the pericardium, the sac-like covering of the heart) after a heart attack.

Drill, dental
A device that dentists use to drill into teeth.

Drinox
Trade name of the insecticide aldrin.

Drip
In medical usage, a drip is not a dull, unattractive person but a device for administering a fluid drop-by-drop into a vein. It is an intravenous (IV) fluid dripping into a vein, an intravenous fluid drip, a solution (usually a balanced electrolyte solution) administered directly into the venous circulation. It is, for short, an IV.

Drosophila

Drosophila genome
All of the genetic information contained in Drosophila, the fruitfly. The genomes of particular nonhuman organisms such as Drosophila have been studied for a number of reasons including the need to improve sequencing and analysis techniques. These nonhuman genomes also provide powerful sets of data against which to compare the human genome.

Drug activity
A measure of the physiological response a drug produces. A less active drug produces less response (and visa versa).

Drug caution codes
Abbreviations on medications that indicate caution.

Drug resistance
The ability of bacteria and other microorganisms to withstand a drug to which they were once sensitive and were once slowed in growth or killed outright.

Drug, ACE-inhibitor
A drug that inhibits ACE (angiotensin converting enzyme) which is important to the formation of angiotensin II. Angiotensin II causes arteries in the body to constrict and thereby raises the blood pressure. ACE inhibitors lower the blood pressure by inhibiting the formation of angiotensin II. This relaxes the arteries. Relaxing the arteries not only lowers blood pressure, but also improves the pumping efficiency of a failing heart and improves cardiac output in patients with heart failure. ACE inhibitors are therefore used for blood pressure control and congestive heart failure.

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