What is a selectable marker​

Darius is observing a family of geese, which includes a male goose, female goose, and several goslings. when a dog approaches the geese, the male goose hisses at the dog and flaps its wings threateningly. is the behavior of the male goose an example of an adaptation?

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

How will you manage your time to accomplish the necessary tasks both on the job and at home?