* Some people have blue eyes and the others have brown eyes.
Which of the following explains accurately the reason for this ?
a)They have different alleles.
b) One gene is recessive.
c)They have different genes.
d) All the previous.

one centimetre is equal to 0.01 metres

the answer is :

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.