Cortex gene helps in defensive manoeuvres

Q.  Scientists found that a gene permits the off white peppered moth to evolve dark wings to escape predators in industrial England. What is it called?
- Published on 02 Jun 16

a. Cortex gene
b. Green gene
c. Blue gene
d. Youth gene

ANSWER: Cortex gene
 
The gene was reported for close to 40 species of butterflies to develop flash bright yellow stripes to ward off hungry birds
  • Findings published as a separate set of studies in Nature are important for many reasons
  • Heliconius genus of butterflies branches off from moths on tree of evolution 100 million years ago
  • This much sought after gene called the cortex has been unbelievably stable over a period of time
  • Same gene is responsible for switching colours and patterns in peppered moth

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