4. Assume a fish inherits a deletion mutation in the pituitary switch that inactivates the switch. You isolate DNA from jaw, pelvic, eye, and pituitary tissues. In the DNA of which tissue(s) would you expect to see the pituitary switch mutation? Draw an "X" over the mutated switch in the appropriate tissue(s). Jaw Eye Pelvis Activator 1 Pituitary switch Jaw switch Pelvic switch Pitx1 ብብብብብብብ Pituitary Activator 3 Pituitary Jaw Pelvic switch switch switch Pitx1 Activator 2 Pituitary Jaw switch switch Pelvic switch Pitx1 ከብካብ ካብ ካብ ብጊዜ ብ Activator 4 Pituitary switch Jaw switch Pelvic switch Pitx1

4. Assume a fish inherits a deletion mutation in the pituitary switch that inactivates the switch. You isolate DNA from jaw, pelvic, eye, and pituitary tissues. In the DNA of which tissue(s) would you expect to see the pituitary switch mutation? Draw an "X" over the mutated switch in the appropriate tissue(s). Jaw Eye Pelvis Activator 1 Pituitary switch Jaw switch Pelvic switch Pitx1 ብብብብብብብ Pituitary Activator 3 Pituitary Jaw Pelvic switch switch switch Pitx1 Activator 2 Pituitary Jaw switch switch Pelvic switch Pitx1 ከብካብ ካብ ካብ ብጊዜ ብ Activator 4 Pituitary switch Jaw switch Pelvic switch Pitx1

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter16: Gene Expression

Section: Chapter Questions

Problem 28CTQ: A scientific study demonstrated that rat mothering behavior impacts the stress response in their...

See similar textbooks

Similar questions

When the concentration of thyroid hormone in the blood increases, it: a. inhibits TSH secretion by the pituitary. b. stimulates TRH secretion by the hypothalamus. c. stimulates the pituitary to secrete TRH. d. stimulates the pituitary to secrete TSH. e. activates a positive feedback loop.
1. How do hormones encode information? and How do cells "know what to do" in response to hormonal information?
A scientific study demonstrated that rat mothering behavior impacts the stress response in their pups. Rats that were born and grew up with attentive mothers showed low activation of stress-response genes later in life, while rats with inattentive mothers had high activation of stress-response genes in the same situation. An additional study that swapped the pups at birth (i.e., rats born to inattentive mothers grew up with attentive mothers and vice versa) showed the same positive effect of attentive mothering. How do genetics and/or epigenetics explain the results of this study?
1.Describe three (3) major classes of molecules function as hormones in vertebrates.
A scientist hypothesizes that the pancreas’s hormone production is controlled by neural stimuli. Which observation would support this hypothesis? Insulin is produced in response to sudden stress without a rise in blood glucose Insulin is produced in response to a rise in glucagon levels Beta cells express epinephrine receptors Insulin is produced in response to a rise in blood glucose in the brain.
Which of the following is a constant source of adult stem cells in a mammal? a. bone marrow b. pancreas c. basal lamina d. heart muscle e. kidney
1. Describe the different functions of the endocrine system.
1. During the formation of the limb bud, the components of the zeugopodium develop in the presence of: a. High concentrations of Fgf and low concentrations of Gli b. High expression of Hox genes 9 and 10 c. High expression of Hox genes 10 and 11 d. Intermediate concentrations of Retinoic Acid and Wnt e. Low concentrations of Retinoic Acid and Fgf f. a and b g. a and c h. c and d i. b and e
1)What tissue regulates both the adenohypophysis and the neurohypophysis? Does this tissue regulate lots of physiological functions? Give a few examples. 2) All of the following are directly controlled by a hormonal stimulus from the hypothalamus EXCEPT… a)GH, Growth hormone b) FSH c) Oxytocin. d) TSH, Thyroid Stimulating Hormone 3) How would a tumor in cells that produce TSH affect levels of TSH in the blood? increase / decrease / normal 4) How would this affect hormone secretion by the target cells of TSH? increase / decrease / normal
2) On the soap opera “The Young and the Restless”, several individuals suffer from a rapid aging syndrome in which a young child is sent off to boarding school and returns three months later an angry teenager. Victims have been known to age up to two decades in variations of the disorder. In the Newman family, siblings Nicholas and Victoria aged from ages six and eight to sixteen and eighteen within a few months. Their parents, Victor and Nikki, are not affected; in fact, they never seem to age at all. A. What is the mode of inheritance of the rapid aging disorder affecting Nicholas and Victoria? B. Explain your reasoning:
1. Use the following scenario to answer questions: Stimulation of G-protein coupled receptors on ovarian cells by certain pituitary hormones promotes the synthesis of estrogen and progesterone using Gαs pathways. Suppose you are studying the release of estrogen from cultured ovarian cells exposed to pituitary hormones. What effect would the following conditions have on estrogen release in response to the pituitary hormones? Genetic deletion (knockout) of Gα along with overexpression of constitutively active PKA would result in (hint: think of epistasis experiments) Answers: a. No change in estrogen release b. Increased release of estrogen c. Decreased release of estrogen d. Can not be determined 2. Imagine that you knocked out the gene encoding the anaphase inhibitor (securin) in a population of fission yeast. Would you expect these yeast cells to be smaller than normal, longer than normal or normal-sized? a. Smaller…
Match each pituitary hormone with its target. ____antidiuretic hormone a. gonads (ovaries, testes) ____oxytocin b. mammary glands, uterus ____luteinizing hormone c. kidneys ____growth hormone d. most body cells