269
Question
When stained with a certain dye, the chromosomes show alternate light and dark bands known as Q-bands under the microscope. Name the dye.
When stained with a certain dye, the chromosomes show alternate light and dark bands known as Q-bands under the microscope. Name the dye.
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Solution
The correct option is C Quinacrine mustard
Q band is a typical pattern which is obtained by using Quinacrine mustard dye. Nucleus located in the centre of each cell has chromosomes coiled in the form of chromatin network. Chromosomes are gene carriers. They are made up of 2 chromatids, that are joined to each other through a centromere. heterochromatic DNA which is firmly packed and coiled is commonly stained by this dye. The pattern is similar to that obtained by light and dark bands obtained by G banding. The regions having rich Adenine Thymine complexes are highlighted with yellow fluorescence as seen in Q banding.So the correct answer is " Quinacrine mustard ".
Q band is a typical pattern which is obtained by using Quinacrine mustard dye. Nucleus located in the centre of each cell has chromosomes coiled in the form of chromatin network. Chromosomes are gene carriers. They are made up of 2 chromatids, that are joined to each other through a centromere.
heterochromatic DNA which is firmly packed and coiled is commonly stained by this dye. The pattern is similar to that obtained by light and dark bands obtained by G banding. The regions having rich Adenine Thymine complexes are highlighted with yellow fluorescence as seen in Q banding.
So the correct answer is " Quinacrine mustard ".
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