Scientists have found that all living things, from bacteria to humans, rely on genetic codes to direct the functions of their cells. these genetic codes are contained in strings of nucleotides and have very similar structures. which hypothesis for the origin of life on earth is supported by this evidence

Ans.

The Miller-Urey hypothesis is based on the chemical experiment done by Miller and Urey to test the chemical origin of life. In their experiment, they stimulated the conditions as thought to be present on early or primitive Earth and used simple inorganic molecules, such as nitrogen gas, carbon dioxide and energy.  

Formation of nucleic acids, amino acids, and other organic molecules took place in the experiment. The nucleic acid contained information for the protein synthesis in the form of genetic codes as each genetic codes for a specific amino acid. They found that in all living things, genetic codes are present with very similar structures, which direct the functions of all cells.  

Thus, 'the hypothesis for origin of life on life, which is supported by this evidence is Miller-Urey hypothesis.'

Self-replicating RNA in the early Earth's oceans served as the basis for the DNA in cells today

the answer is a. now keep my answer here.

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)