Most sexually reproducing organisms carry two copies of each gene, allowing them to carry two different alleles. distal /DIS-təl/ adj. dyspnea /disp-NEE-yə/ n. A desire or hunger for air; manifested in strained, usually painful, breathing. Printer friendly. Biology is subdivided into separate branches for convenience of study, though all the subdivisions are interrelated by basic principles. dextrocardia /deck-strō-KARD-ee-yə/ n. Presence of the heart oōn the right side of the body. dormancy /DORE-mən-see/ n. A period of interrupted growth and metabolic inactivity. The earliest known tetrapods, ammonites, and seed plants all date to this period and it was during the Devonian, too, that terrestrial arthropods became well-established, and bony fish proliferated in the oceans. Widely used as a solvent in chemical reactions. Derotremata /der-ə-TREM-ə-də, -TREEM-/ n. A group of salamanders in which gill slits, but no external gills, are present in the adult; includes the giant salamanders' family of Cryptobranchidae and the amphiumas. Abbreviation to define. Blood. Having discoid feet. Sexual dimorphism, the differences between males and females of the same species, such as in color, shape, size, and structure, that are caused by the inheritance of one or the other sexual pattern in the genetic material. It is itself miscible in many organic solvents, and in water. dosage effect /DŌ-səj/ The effect of varying gene copy number; increasing/reducing the number of copies of a gene within a genome can increase/reduce the number of copies of gene product produced, causing changes in physiology and development. Join Yahoo Answers and get … Learn. dorsum /DORE-səm/ adj. Dichromatic definition is - having or exhibiting two colors. digestion n. The process by which food is broken down into a form that can be absorbed by the body. What does DIA stand for? ", DNA polymerase /pə-LIM-er-aze/ n. An enzyme that catalyzes the synthesis of a complementary strand of DNA on a single-stranded DNA template. dactyl /DAKT-əl/ n. A digit (finger or toe). Developing from only two germ layers (ectoderm and endoderm). diagenesis /dÄ«-ə-JEN-ə-səs/ (pl diageneses /dÄ«-ə-JEN-ə-seez/) n. Change in fossils, or in sedimentary minerals, occurring after their deposition. mono means 1 di means 2 and poly means many. In biology, turgid refers to cells or tissues that are swollen from water uptake. Thus, while it is custom to separate the study of plants from that of animals (), and the study of the structure of organisms from that of function (), all living things share in common certain biological phenomena—for example, various means of … Get your answers by asking now. Meaning: drill instructor. decimorgan /DES-ə-MORE-gən/ See: Morgan unit. Instructor: Thomas Higginbotham Tom has taught math / science at secondary & post-secondary, and a K-12 school administrator. Affecting, or pertaining to both ears. 2. What does the abbreviation DI stand for? A 1x magnification power is a 100 percent increase in the magnified object’s size For example, a 1-inch object at 1x would appear to be 2 inches. double fertilization The unique mode of fertilization seen only in angiosperms, where two sperm cells (male gametes)fertilize two separate cells within the embryo sac. didym- or didymo- [Greek didymos twin, testis] (1) testis (didymitis); (2) twin (didymus). Denaturation makes a protein lose its functionality. Start studying Prefixes/suffixes/Root Words often used in Biology. Looking for the definition of DI? The general effect of methylation is to reduce the expression of the affected (or "tagged") genes. Methylation of DNA allows cells to "remember" where they have been or alter gene expression in response to ambient conditions. The combination of domains in a single protein determines its overall function; (2) in taxonomy, the type of category with highest rank (higher than kingdom). This word part is derived from the Greek -tomia, which means to cut. STUDY. didactylous /dÄ«-DAK-til-ləs/ adj. duplex DNA /DOOP-lex/ Two single polynucleotide DNA chains joined along their lengths to form a double helix. Biology Dictionary (DE-) deaminization /də-am-in-eye-ZAY-shən, dee-/ n. Chemical decomposition in which a compound such as an amino acid or alkaloid … dehydrate /də-HĪ-drate, dee-/ v. To reduce or entirely remove the water content of a substance or body. Di-: Prefix taken directly from the Greek meaning twice or double or twofold, as in diacid, diamelia (absence of two limbs), diandry (double male genetic contribution) and digyny (double female genetic contribution); the drugs diazepam, dicyclomine (), and diethylstilbestrol (DES); etc. In a nutshell, marine biologists study a variety of organisms and ecosystems in the ocean and other saltwater environments. Cells have been seen fusing together into massive and malfunctioning cells - called syncytia - that seem to stick around. Some cells will lyse, or split open if they become too turgid.Other cells are meant to be turgid and have a dense and complexly woven extracellular matrix made of special fibrous … PLAY. dendrochronology /den-drō-krə-NAWL-ə-jee/ n. The use of tree growth rings to date environmental events. It is used commonly in chemistry, as in dioxide, a compound having two oxygen atoms. MORE INFORMATION, DNA methylation /METH-əl-AY-shən/ n. A biochemical process involving the addition of a methyl group to the 5 position of the cytosine pyrimidine ring or the number 6 nitrogen of the adenine purine ring (cytosine and adenine are two of the four bases of DNA). deoxyribonucleic acid (DNA) /dee-AWKS-ee-RĪB-ō-n(y)oo-KLAY-ək/ The molecule in living organisms that contains inherited information. ©1996-2020 MedicineNet, Inc. All rights reserved. experiment in genetics in which the phenotypes of two genes are followed through the mating of individuals carrying multiple alleles at those gene loci deposition /DEP-ə-ZISH-shən/ Accumulation by sedimentation, chemical precipitation, or evaporation of a suspending solute. double circulatory system A blood circulation in which the pulmonary circulation is separate from the systemic circulation (as in mammals, birds, and crocodilians). Biology definition, the science of life or living matter in all its forms and phenomena, especially with reference to origin, growth, reproduction, structure, and behavior. dam n. The female parent; used in connection with domestic animals. Biology is brought to you with support from the Our mission is to provide a free, world-class education to anyone, anywhere. — Virginia Morell, National Geographic, "Hummingbirds see colors we can’t even imagine," 15 June 2020 … How to use DI in a sentence. Unlike ordinary fish scales, denticles have a structure similar to that of real teeth (i.e., an internal pulp cavity surrounded by dentin with an enamel-like coat of vitrodentine). Source(s): translation transcription dealing genetics biology: https://shortly.im/BYKya. ADDITIONAL DETAILS. dermatology/derm-ə-TAWL-ə-jee/ n. The study of the skin and of the treatment of its diseases. discodactylous /DISK-ō-DAK-təl-əs/ adj. Di-, like bi, means two. What does di- mean? The word "biology" is derived from the Greek words "bios" (meaning life) and "logos" (meaning "study"). Cell Theory: There are three parts to cell theory — the cell is the basic unit of life, all living things are composed of cells, and all cells arise from pre-existing cells. 0 0. Terms of Use. Meaning of DIA. dikaryotic /dÄ«-kar-ee-AWT-ick/ Having two nuclei per cell. Meaning of di-. What Does The Prefix Mono. 4 years ago. 1 0. branum. decubation /deck-you-BAY-shən/ n. The act of lying down. dilatant /Ä«-LAY-tənt/ n. Something that causes dilation.