Select all that apply. Which of the following statements are true?
A purebred organism can either be TT or tt.
Recessive genes will sometimes be masked by dominant genes.
The combination of two genes determines the genetic trait of an organism.
It is possible for two genetically different plants to have the same phenotype.

the fossil record provides evidence of a common ancestor to many species.

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.