Color blindness is caused by an X-linked recessive gene. A color-blind man and a woman with normal vision whose father was color blind have a son. The probability that their son is color blind is:
A) 1.00 (or 100 percent).
B) 0.75 (or 75 percent).
C) 0.50 (or 50 percent).
D) 0.25 (or 25 percent).
E) none of these.
Answer: C
You might also like to view...
The lateral line is:
A. a lateral stripe on the side of male fish that aids in sex-recognition B. a series of sensory organs that detects pressure waves in the water C. the row of fins along the sides of eels D. the row of pharyngeal slits along each side of the heads of fish E. the row of small blocks of cartilage along each side of the notochord of agnathan fishes
In Animal farm, Orwell criticizes primarily which world leader?
a. Leon Trotsky b. Adolf Hitler c. Joseph Stalin d. Vladimir Lenin
________ play a pivotal role in programmed cell death
A) Cyclins B) Telomeres C) Proto-oncogenes D) Oncogenes E) Telomerases
Which of the following is not a characteristic shared by all chordates at some point in their life cycle?
a. possession of a coelom b. three primary cell layers c. dorsal tubular nerve cord d. pharyngeal gill slits e. vertebrae