## Molecular Basis Of Inheritance

– All formulas of the chapter at one glance.

**1**

**Formula for Calculating the Length of DNA**

**Total length of double helix DNA = Total number of base pairs x distance between two consecutive base pairs**

**Example:**

**2**

**Formula for Chargaff’s rule** **It states that DNA from any cell of the organisms should have a 1:1 ratio of pyrimidine and purine bases and more specifically that the percentage of guanine is equal to the percentage of cytosine and percentage of adenine is equal to percentage of thymine.** **%A=%T** **%G=%C** **%(A+G) =%(T+C)** **Example:**

**3**

**Formula for Calculating the Number of Base Pairs in DNA** **Number of base pairs =Length of DNA (m)/Distance between two base pairs** **Example:**