
-value is the characteristic content in a haploid cell of a given species. Earlier it was considered that -value correlates with organism complexity. However, it is now evident that -value varies enormously among species and that this bears no correlation with the complexity of the organisms. For example, the cells of some salamanders may contain times more than those of humans. Which of the following explains this -value paradox?


Important Questions on Molecular Basis of Inheritance
The fingerprinting analysis of four family members is shown below.
Study the band pattern obtained and assign each family member to and . Choose the correct option.


The semi-conservative nature of replication was established by Meselson and Stahl in their classic experiment with bacteria. They grew bacteria in . containing medium, washed and then incubated in fresh medium with - containing compounds and allowed to grow for three generations. density gradient centrifugation of isolated established the nature of semiconservative replication. The pictorial representation below shows the position of differentially labeled in density gradient.
Had the replication been conservative, what would have been the pattern?


A sequence undergoes three subsequent point mutations which result in subsequent changes in transcription of as shown below:
Original
Point mutation
Point mutation
Point mutation
Select the correct sequence of point mutations that occurred in the .



