The dominant gene for round red blood cells is s and the recessive gene for sickle-shaped red blood cells is s. based on their genotypes, which set of parents has the most likely chance of producing a child with sickle-cell disease?
a. ss mother and ss father
b. ss mother and ss father
c. ss mother and ss father
d. ss mother and ss father

b

Explanation:because the recessive closet to the to the gene that causes is that

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

voluntary muscles are controlled by the cerebellum.