Question

Evolution has exhibited a greater stability of the molecular structure when compared with morphological structures. Comment on the statement and justify your opinion

Answer 1

• Structure which are apparent to our eyes are called morphological structures.
• Molecular structures are those biomolecules which are the integral components of organisms. 
• We see lot of diversity all around us. 
• This diversity is possible because of diversity in morphological structures. 
• This shows that morphological structures are least stable. 
• Life which began as simple forms on the earth in now composed of many complex forms. 
• Life has evolved for millions of years but the structure of basic biomolecules such as DNA remains same. 
• A DNA is same in a human and in a mouse. 
• A protein has same structure in a bird and in a fungi. 
• So, the molecular basis of life has not changed through all these years.
• This proves that evolution has exhibited a greater stability of molecular structure when compared with morphological structure.