Internal regulators allow the cell cycle to proceed only when certain processes have happened inside the cell. ... Cancer cells do not respond to the signals that regulate the growth of most cells. As a result, they divide uncontrollably and form masses of cells called tumors that can damage the surrounding tissues.
The correct answer is (a.) a mutation of the hemoglobin allowing better oxygen-carrying capacity. The mutation of the hemoglobin that allows a better oxygen-carrying capacity would be the most beneficial to an elephant and its descendants.
Antibiotic resistance happens naturally due to genetic mutation through random selection, however, genetic drift occurs on purpose and tests which genes are stronger and should continue to be passed on to future generations. In most cases, genetic drift is needed and antibiotic resistance isn’t.
Answer:
Evolutionary responses. In this case, interconnected with the <em>climate change </em>phenomenon.
Explanation:
Today, Climate change is considered one of the biggest challenges all species, including humans, have ever faced in the history of the Earth.
Many species are forced to adapt to these climatic variations by exhibiting different behaviors, changes in physiology, even in physical characteristics. <u>While some species will be able to adapt due to their plasticity, i.e. their ability to accommodate to these changes; others will not be able to adapt as fast as needed.</u>
In this case, some bird species with low plasticity will be facing population declines due to their inability to adapt quickly, while others will be able to survive because they are able to adjust their behaviors and physiology. <u>Both cases are examples of evolutionary responses, which in this case, are related to climate change.</u>
