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Question

Select the statements that describe the characteristics of genes.

i. Genes are specific sequences of bases in a DNA molecule
ii. A gene does not code for a protein
iii. In individuals of a given species, a specific gene is located on a particular chromosome
iv. Each chromosome has only one gene.

A
i and ii
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B
i and iii
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C
i and iv
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D
ii and iv
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Solution

The correct option is B i and iii
Characteristics of a gene can be listed as follows:

1. A gene is a specific sequence of bases present in a stretch of DNA molecule.

2. The sequence of bases in a gene codes for a protein molecule.

3. In an individual of a given species, gene has fixed location on a particular chromosome. An alternate form of a gene exists and is called as allele.

5. Alleles are located as the same position on homologous chromosomes.

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