Answer:
A mutation is generally referred to as certain alternations in the gene whether it may be DNA sequences, which may be beneficial, harmful or of no significance to the mutant gene bearing organisms.
Explanation:
- A mutation that increases the ability to store moisture in a dry environment is obviously beneficial. Because it prevents dehydration and maintains normal functioning in spite of adverse conditions.
- A color mutation that decreases a bird's chances of sexual selection is beneficial in the sense that it prevent certain abnormalities in offspring like sexual dimorphism. Also sexual selection often proves to be a threat to the survival of the organisms as per handicap principle.
- A mutation in non coding region of DNA is harmful, as it is often observed to facilitate expression of wrong proteins at inappropriate places.
- A mutation in the that does not changes protein synthesis increased white pigmentation on a prey animal in snowy environment as it had prevented adaption of the prey and hence harmful for survival of it.
- A mutation decreasing plant's height in competition to light, makes them less exposed to sun energy important for photosynthesis and hence it is harmful for the plant.
Answer:
C. Homeostasis
Explanation:
"Homeostasis" refers to the process of maintaining the body's equilibrium. The body tries to adjust to different stimuli in order to help it function in normal ranges. For example, when a person is exposed to a cold weather all of a sudden,<em> the person starts to shiver in order to maintain homeostasis</em>. <em>Shivering</em> is a contraction of the muscles that <em><u>allows the generation of heat</u></em>.
On the contrary, when a person is exposed to the sun during summer,<em> his body will start to sweat in order to maintain homeostasis</em>. <em>Sweating</em> allows the heat to dissipate from the body thereby lowering the body's temperature.
Cladodes<span> (also called cladophylls or phylloclades) are shoot systems in which leaves do not develop; rather, the stems become flattened and assume the photosynthetic </span>functions<span> of the plant. In asparagus ( Asparagus officinalis; Asparagaceae), the scales found on the asparagus spears are the true leaves.</span>
It could have the most direct effect on the amount of mitochondria in cells and also the system of the membrane.
