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Question
Select the statements that describe characteristics of genes :
(i) genes are specific sequences of bases in a DNA molecule.
(ii) a gene does not code for proteins.
(iii) in individuals of a given species, a specific gene is located on a particular chromosome.
(iv) each chromosome has only one gene..
Options
(i) and (ii)
(i) and (iii)
(i) and (iv)
(ii) and (iv)
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Solution
(i) and (iii)
Explanation:
A gene is the section in a DNA on a chromosome that codes for the formation of a protein, controlling a specific characteristic of the organism. The two genes which are responsible for a particular characteristic are always present on the corresponding position of the pair of chromosomes. There are thousands of genes on a chromosome, which control various characteristics of an organism.
