Which situation results in a characteristic that is
inheritable?
(1) a limb is lost when two marine organisms fight.
(2) a puppy learns to beg for food by watching
an older dog perform tricks.
(3) a gene is inserted into a bacterium, allowing
the organism to produce insulin.
(4) a random mutation causes the immediate
death of a microbe.

Tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d