Question

Which of the following statement is incorrect regarding the band region of polytene chromosome?

• A. Feulgen negative area
• B. Absorb ultraviolet light at 2600 $\mathring{A}$
• C. Chromonemata is tightly packed
• D. Stain intensify with basic stain

Answer 1

The correct option is A Feulgen negative area

Polytene chromosomes are the giant chromosomes first found in the salivary gland, trachea and other body parts of dipteran insects. They are euchromatic in nature and contain large amount of DNA, small amount of RNA and certain basic proteins. The chromosome is divided into dark bands/bands (stain positive) and interbands (stain negative). The band is Feulgen positive or stained by Feulgen stain

So, the correct answer is 'Feulgen negative area'