All scientific must be based on careful and rational examinations of the facts. hypothesis laws theories inquiries

Answer;

Theories

All scientific theories must be based on careful and rational examinations of the facts.

Explanation;

-A scientific theory is a series of statements about the causal elements for observed phenomena. A critical component of a scientific theory is that it provides explanations and predictions that can be tested.

-A good scientific theory is formed from a number of hypotheses that can be tested independently. It should also consists of a limited number of problem-solving strategies that can be applied to a wide range of scientific circumstances.

answer; a male inherits only one allele of the x-linked gene controlling hair color;