These Labrador puppies have the same parents but differ in fur color and stature. What governs the inherited traits each puppy receives from its parents? a: whether or not either of the parents ever won Best in Show in a dog competition
b: underactive or overactive pigmentation in the integumentary system
c: genes within the chromosomes in the nuclei of cells
d: electrical impulses sent through the body of the nervous system

Certain bacteria (such as aquaspirillum magnetotacticum) tend to swim toward the earth’s geographic north pole because they contain tiny particles, called magnetosomes, that are sensitive to a magnetic field. if a transmission line carrying 100 a is laid underwater, at what range of distances would the magnetic field from this line be great enough to interfere with the migration of these bacteria? (assume that a field less than 5% of the earth’s field would have little effect on the bacteria. take the earth’s field to be 5.0 * 10-5 t, and ignore the effects of the seawater.)