Which of the following can produce a duplicate gene
a. genetic drift in reproduction
b. neutral mutation during transcription
c. chromosome replication during mitosis
d. crossing over during mitosis

I think the correct answer from the choices listed above is option D. Crossing over during mitosis is the process that can produce a duplicate gene. It is the process where chromosomes pair up with each other. Hope this answers the question. Have a nice day.

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.