Albinism is a recessive disorder in which the skin and hair fail to produce pigment. The following question(s) ask you to evaluate the pedigree chart shown here in which "N" is the allele for normal pigmentation and "n" is the allele for albinism. The shaded circles for Deirdre and Shannon represent the only individuals expressing the disorder.
According to the pedigree above, who is a not a carrier of albino?
A. Aaron
B. Bill
C. Brandon
D. All of the above are carriers of albino
Answer: D
You might also like to view...
Which of the following statements about the organization of complex multicellular organisms is false?
A. Exterior cells are highly differentiated whereas interior cells are not differentiated. B. Only some cells are in direct contact with the environment. C. Interior cells cannot grow as fast as exterior cells without mechanisms to transfer nutrients between cells. D. Exterior cells receive environmental signals directly, whereas interior cells receive environmental signals indirectly. E. Signals transferred from exterior cells to interior cells can activate or repress gene expression in the interior cells.
If the phloem in a tree trunk were to become blocked, how would this affect the plant?
A. Water could not be sent to the roots. B. Sugars could not be transported from leaves to roots. C. The leaves would dry out. D. Sugars could not be made.
The first cells appeared on Earth about __________
years after its crust solidified. a. 1 billion b. 200 million c. 3.8 billion d. 4.5 billion e. a few
For your eye to focus on this sentence, the ciliary muscle would need to:
a. contract for the lens to get rounder. b. contract for the lens to get flatter. c. relax for the lens to get rounder. d. relax for the lens to get flatter. e. relax to thin out the lens.