A mutation in either a hormone or its receptor might affect the physiological system that it normally regulates by either blocking hormone effect or creating a completely different effect.
Hormones can be called chemical messengers which coordinate distinct functions in the body. Many glands, organs and tissues produce and release hormones, many of which constitute the endocrine system.
A hormone will only act on a part of the body if it fits i.e. if the cells in the target tissue have receptors which can receive the message of the hormone. Given that hormones carry instructions in their structure, mutations alter their structures by changing nucleic acid sequences which blocks hormone function.
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Answer:
E. coli within the large intestine
Explanation:
A symbiotic relationship is known to be a relationship between two organisms. In this relationship, one organism may benefits and the other suffers[ Parasitism} or both organisms benefit [ mutualism], while one organism may benefit and the other neither benefits nor suffers[ commensalism].
Mutualism is an example of symbiotic relationship where the two organisms involve benefits.
In this case, Man benefit from the presence of E, coli in the large intestine because it keeps the digestive system healthy, help in the digestion of food and the production of vitamin K which helps in blood clotting. The E. coli also benefits because there is availability of nutrients that it needed.
Answer: lf an organism produces many offspring, but none of them reach maturity, then it has low fitness, because its offspring will not pass on their traits to the next generation.
Answer: I couldn't find the site, but I can tell you what each of these men, that way you can find them on your own :)
Explanation:
Using a bullfrog as an example
Their common name is Bull frog, their scientific name is Lithobates catesbeianus
Major physical structures and color are: Strong legs for jumping, buldge-y eyes, slick skin. They are usually greenish brown.
Oops. I just saw the Siberian wood frog bit.
I need to go, but I hope my bullfrog example will help you answer your questions for Siberian wood frog. :)