Which of the following organ in human produces melanin that controls the skin colour?
a) bone
b) brain
c) skin
d) posterior pituitary
Melanin is produced from………in skin.
a) aniline
b) lysine
c) tyrosine
d) isoleucine
Explanation: by the help of enzyme tyrosinase
How many genes regulate the amount of melanin production in human skin?
a) two
b) three
c) four
d) seven
Explanation: Gene A, Gene B and Gene C
Which of the following gene/s is/are involved in the permanent survival, proliferation and migration of melanocytes?
a) Gene A
b) Gene B
c) Gene C
d) all of these
Which of the following gene/s encode/s the enzyme tyrosinose which is involved in the production of melanin from tyrosine?
a) Gene A
b) Gene B
c) Gene C
d) all of these
Which of the following gene/s is/are primarily responsible for determining whether pheomelanin or eumelanin is produced in humans?
a) Gene A
b) Gene B
c) Gene C
d) all of these
