Is a recessive genetic disorder that strikes young african-americans and affects the hemoglobin in red blood cells.
a) aids
b) hemophilia
c) tuberculosis
d) sickle-cell anemia

In order to study genetic mutations, scientists must study genetic material. which statement describes the genetic material scientists are most likely studying? a) they study alleles that contain chromosomes, which are rna.b) they study alleles that contain genes, which are chromosomes.c) they study chromosomes that contain genes, which are dna segments.