Ahuman baby boy inherits a recessive allele from his mother. in which circumstance would he most likely show the trait coded for by the recessive allele?

If the trait is X-recessive

Explanation:

X-recesssive trait means that that the gene causing the trait or the disorder is located on the X chromosome and that  alleles of that gene must be recessive. In females (XX chromosomes), alleles of both chromosomes must be recessive so that the trait can be expressed. On the other hand, in males (XY chromosomes), only one recessive allele is sufficient for the trait expression.

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.