The pedigree below shows the occurrence of tongue rolling in three generation of a family (t = the ability to roll the tongue; t is the inability to roll the tongue): What are the most likely genotypes of the parents in the second (II) generation? A. mother tt, father Tt B. mother tt , father TT C. mother Tt , father tt D. mother TT , father tt

geologic time scale (for gradpoint) =)

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.

cell/ tissue/ organ/ organ system/ body