Duchenne muscular dystrophy is a recessive disorder resulting in a wasting away of the muscles. How would you design a study to determine if the disorder is X-linked or autosomal? How would you be able to determine if it is X-linked or autosomal?
What will be an ideal response?
The study would analyze the inheritance patterns of a family through many generations, using a pedigree. If phenylkenonuria is X-linked, then more males than females will be affected, an affected son can have parents who are normal, and for a female to have it her father must also have it and her mother must have the disorder or be a carrier. It can also skip generations from grandfather to grandson. If the disorder is autosomal, both males and females are affected equally.
You might also like to view...
Which of the following bacterial structures is incorrectly matched with a function?
A. Ribosomes - protein synthesis B. Nucleoid - hereditary material C. Plasmids - contain genes essential for growth and metabolism D. Inclusions - excess cell nutrients and materials E. Cytoplasm - dense, gelatinous solution
The tube through which urine leaves the urinary bladder is the
a. collecting duct. b. urethra. c. renal pelvis. d. ureter. e. renal vein.
Which cells release antibodies into the plasma?
a. T helper cells b. plasma cells
c. cytotoxic T cells d. B cells e. antigen presenting cells
Why are eyespots ineffective at detecting images?
a. Eyespots cannot detect the direction of a light source. b. Eyespots cannot distinguish light intensity. c. Eyespots lack sensory cells. d. Eyespots lack lenses. e. Eyespots contain opaque lenses.