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Revision Questions: Genetics 1 1 __________________________ is the study of classification. The basic unit of classification is the __________________________________. (2(5)) 2 The members of a species are capable of _______________________________ with each other. (10) 3 Say if the following variations are inherited or acquired. (a) freckles _____________________________________ (b) the production of an enzyme _____________________________________ (c) the ability to play a musical instrument _____________________________________ (d) the ability to form a blood clot _____________________________________ (e) the ability to read _____________________________________ (5(2)) 4 Heredity is the passing on of features from one generation to another by means of ________________________________________. (10) 5 Genes are sections of ____________________________ on a _____________________, hich carry the code for the production of a protein. (2(5)) 6 Gene _____________________________ is the way in which a gene produces a protein in a cell. (10) 7 Characteristics are the result of the interaction of our __________________________ with our genes. (10) 8 All humans are members of the same ___________________, despite having many visible ____________________. (2(5)) 9 Non-coding DNA makes up about ________% of a chromosome and does not cause the production of a ____________________. (2(5)) 10 Chimpanzees and gorillas form two different ______________________________ because they cannot successfully _________________________________ with each other. (2(5)) 11 (a) Name the four bases found in DNA. ____________________, ____________________,____________________ and ____________________. 12 One strand of DNA has the base sequence ATTGC. Give the sequence of bases on the complementary strand of DNA. ___________________________________ (5(2)) 13 A _______________________________ is a sequence of three DNA bases that carries the code for a single ______ ___________________________. (2(5)) 14 A section of a chromosome that causes the production of a protein is called a ___________________________. Sections of a chromosome that do not cause the production of any known product contain so-called _____________________ DNA. (2(5))