example vertebrate

Question 1

what are the two main hormone factors in vertebrate development

Answer 1

thyroid hormones and CRF

Question 2

what is the pathway of releasing these hormones

Answer 2

Environmental stimuli – hypothalamus – corticosteroid releasing factor – anterior pituitary – thyrotropin (thyroid) and ACTH (adrenal glands )- T3 and 4 (thyrotropin)) – corticosteroids(acth)- TH binding protein – circulating binding globulin – target cells – growth (t) – response (a)

Question 3

what in a frog does metamorphosis rely on

Answer 3

pond quality, density of tadpoles and predators