_____ Mutations Produce New Activities and are Usually Dominant

Question

_____ mutations produce new activities and are usually dominant.
A)Induced
B)Spontaneous
C)Forward
D)Gain-of-function
E)Lethal

Accepted Answer

Gain-of-function mutations result in an altered protein that is usually dominant and gains a new function or activity. Induced mutations are caused by environmental factors such as radiation or chemicals, while spontaneous mutations occur naturally without any external influence. Forward mutations change the wild-type phenotype to a mutant phenotype, while lethal mutations result in the death of the organism.