Answer: The correct answer is A
Explanation:
This because in space there is microgravity I.e absence or less gravity, the astronaut do not need to do much work, just to sleep, eat and go around. In microgravity the muscles are prone to atropy( respons e to gravity) which causes the muscle to be stiffen and straighten out, the muscles becomes weak.
Roughly, the definition of 'genotype' is a description of genetic characteristics or makeup. Phenotype can be described as the resulting physical characteristics subsequent to genotype. This means that differences in genetic makeup could greatly influence how something, such as an embryo, develops.
Comment: I use a memory aid for this ind of thing, as I easily get them mixed up. Simply use the two letters of each word. Genotype --> genetic, and phenotype--> physical. Hope I answered your question.
One of the most common cause of hypersecretion of the endocrine glands would be tumors. Specifically, the presence a hormone secreting endocrine-cell tumor. Hypersecretion is when the gland is secreting too much of a hormone. Hope this helps.
