Researchers recently discovered that when
hammerhead sharks were moved to shallower
water, resulting in exposure to increased light
intensity, their backs turned a deep brownish black.
which statement best supports this observation?
(1) genes are inherited, but their expression
can be modified by interactions with the
environment.
(2) the cells of hammerhead sharks contain many
thousands of different genes in their nuclei.
(3) an inherited trait of an individual can be
determined by one or by many genes.
(4) asexually produced offspring are normally
genetically identical to the parent.