Example invertebrate

Question 1

what are the three factors thta control the signalling pathways of the hormones controlling insect development

Answer 1

• Broad (Br)
• Kruppel (Kr-h1)
• Ecdysone-inducible protein 93 (E93)

Question 2

what two things can happen due to Kr-h1

Answer 2

normal metamorphosis or early metamorphosis (if no Kr-h1) (uses JH)

Question 3

what does Br do

Answer 3

normal or arrested development (low JH and Ecd)

Question 4

what does E93 do

Answer 4

normal or pupal molt (ecd)