The truteal, or trutal, is a concept that does not have a widely recognized definition in academic or scientific literature. If you meant to refer to "treaty" or "tropical," please clarify for a more accurate response. If you are asking about the tracheal system, it is a network of tubes in insects that evolved from ancestral adaptations for gas exchange. Please provide more context for a precise answer.
Development of descendent proceeds farther than that of the ancestor so that earlier stages of the descendent resemble ancestral adults.
Width
The sun
The direct descendents of a person are that person's children, grandchildren, great-grandchildren, etc. The direct descendents can trace their ancestry directly back to the person. For example, you are your great-great-grandmother's direct descendent, but you are not the direct descendent of your great-great-grandmother's sister.
The Umayyads
Allegedly he was a distant descendent.
Syphillis
The three toed sloth
Scion, heir, child, progeny.
Elijah and
Because he is a descendent of his mother.
Labor Unions