join something to something The island is joined to the mainland by a causeway. 5 connect a) JOIN something TOGETHER to connect or fasten things together Join the two pieces of wood with strong glue. join together Three police forces have joined together to buy a helicopter. join (with) somebody to do something Parents have joined with health experts to produce a video for bereaved families. join (with) somebody in doing something I’m sure you’ll all join me in thanking today’s speaker. 4 WITH do something together to do something together with someone else, or as a group join somebody for something I invited them to join us for a glass of wine. Join is always followed by an object in this sense : I’ll join you later. The immigrants were soon joined by their wives and children. 3 go to somebody MEET to go somewhere in order to be with someone or do something with them She joined her aunt in the sitting room. the benefits of joining our pension scheme Church leaders have joined the campaign to end foxhunting.
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2 activity to begin to take part in an activity that other people are involved in Many sacrificed their weekend to join the hunt for the missing girl. You can enjoy a sport without joining a club or belonging to a team. S1 W1 verb 1 group/organization JOIN AN ORGANIZATION to become a member of an organization, society, or group When did you join the Labour Party? I decided to join the army.
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This pair has two X chromosomes in females and one X and one Y chromosome in males. There is one pair of chromosomes, which usually settles the sex of the individual. The chromosomes in any particular pair look like each other, except in a boy. One chromosome in each pair comes from the mother and the other one from the father. The chromosome: Genes are arranged in precise arrays all along the length of 23 pairs of much larger structures: the chromosomes. Each person has thousands of genes - billions of base pairs of DNA or bits of information repeated in the nuclei of human cells -which determine individual characteristics (genetic traits). These unique combinations determine the gene's function, much as letters join together to form words. It is made up of combinations of A, T, C, and G. The gene: A gene is a sequence (a string) of bases.
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Certain bases always pair together (AT and GC).ĭifferent sequences of base pairs form coded messages. As indicated, each base is symbolized by the first letter of its name: A, They are adenine (A), thymine (T), cytosine (C),Īnd guanine (G). Each rung of the spiral ladder consists of two paired chemicals called bases. In the absence of demonstrated function a gene may be characterized by sequence, transcription or homology."ĭNA: Genes are composed of DNA, a molecule in the memorable shape of a double helix, a spiral ladder. A segment of deoxyribonucleic acid (DNA) needed to contribute to a function.Īn official definition: According to the official Guidelines for Human Gene Nomenclature, a gene is defined as "a DNA segment that contributes to phenotype/function. Gene: The basic biological unit of heredity.