Question

According to the data table, what was the percentage composition of hybrid DNA in Generation 4 of the Meselson and Stahl experiment?

विकल्प

• 10% hybrid and 90% light

• 6.25% hybrid and 93.75% light

• 12.5% hybrid and 87.5% light

• 25% hybrid and 75% light

Answer 1

In Generation 4, the observed band pattern showed 12.5% hybrid DNA and 87.5% light DNA. This continued the predictable pattern of semi-conservative replication: as the original parental strands (¹⁵N) are distributed across generations, they become progressively more diluted by newly synthesized light strands (¹⁴N), leading to an exponential decrease in the proportion of molecules containing the original strand.