Answer: option A - tumor-suppressor gene
Explanation:
A cancerous tissue is growing or spreading rapidly at a harmful rate. However, for a tissue to become cancerous, its "internal guard" usually known as a TUMOUR SUPPRESSOR GENE must have lost or reduced its function.
This loss of function occurs after mutation.
So, definitely, all affected individuals with cancerous tissues have mutated tumour suppressor genes unlike unaffected individuals.
Note that other options are WRONG, because none of them accurately distinguishes affected from unaffected individuals
Answer:
Option (1), (3) and (5).
Explanation:
Positive feedback mechanism also exist in the environment that increases the causative effect of the environment. The environment can change the temperature, precipitation and other climatic conditions of the area.
The lack of moisture in Sahara desert and deforestation can cause the trees extinction. The temperature can be increased by the green house gases as the warm atmosphere causes evaporation. The snow gets melted due to increase in temperature and the ground becomes more darker.
Thus, the correct answer is option (1), (3) and (5).
The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs so I would say the first choice, hopefully I helped out !:)
