Assertion :- Euchromatin is said to be transcriptionally acitve chromatin.
Reason : Due to loose coilling of enchromatin RNA polymerase can easily move up on it.

Consider the following statements : A. RNA has evolved from DNA with chemical modification that make it more unstable. B. Central dogma in molecular biology states that the genetic information flows from DNA rarr RNA rarr Protein. C. In some virsus like tobacco mosaic viruses, QB bacteriophage, DNA is the genetic material. D. Euchromatin is said to be transcriptionally active chromatin, whereas heterochromatin is inactive. Of the above statements :

Read the assertion and reason carefully to mark the correct option in question. Assertion: Interphase nucleus has a loose and distinct network of fibre called chromatin. Reason: Chromatin contain RNA, DNA and histone proteins but non-histone proteins are absent.

Assertion : Non-striated muscles are said to be voluntary in nature. Reason : Non-striated muscles can be moved according to will.

Assertion : Non-striated muscles are said to be voluntary in nature. Reason : Non-striated muscles can be moved according to will.

Assertion :- Most of the X-linked disorders can not be eliminated easily from nature and our gene pool. Reason : X-linked dosorders are due to recessive genes.

Assertion : We are able to move a few parts of our body easily in various directions whereas some parts can be moved in only one direction. Reason : Different types of joints are present in different parts of our body.

Assertion: A negative acceleration of a body can be associated with a 'speeding up' of the body. Reason: Increase in speed of a moving body is independent of its direction of motion.

Assertion: A negative acceleration of a body can be associated with a 'speeding up' of the body. Reason: Increase in speed of a moving body is independent of its direction of motion.