The correct answer is the amygdala.
The fear response begins in the brain and scatters all through the body to make amendments for the flight reaction or best defense. The response of fear initiates in the part of the brain known as the amygdala. It is the almond-shaped arrangement of nuclei in the temporal lobe of the brain and is involved in determining the emotional silence of the stimuli.
For example, the amygdala gets stimulated whenever one witnesses a human face with an emotion. This response is more noticeable with fear and anger. A threat sign, like the sight of a predator, initiates a fear reaction in the amygdala that stimulates the regions taking part in preparation for motor activities taking part in flight or fight.
These changes can<span> be caused by environmental factors such as ultraviolet radiation from the sun, or</span>can<span> occur if an error is made as </span>DNA<span> copies itself during cell division. Acquired </span>mutations<span> in somatic cells (cells other than sperm and egg cells) cannot be passed to the next generation.</span>
Incomplete Dominant ; If a red tulip and a white tulip are cross pollinated they result is a pink tulip .<span>http://examples.yourdictionary.com/examples-of-incomplete-dominance.html#Sya4ibfk4gQPjSEW.99
Co dominant trait ; </span>Flower colors
If two plants were crossed to produce a yellow and blue flower, and if the alleles of the gene responsible for petal color were dominant in nature, the flower produced by the progeny plant would either be yellow with blue spots or blue with yellow spots. http://www.softschools.com/examples/science/codominance_examples/477/
Sex linked Trait ; Red-green colorblindness – Inability differentiate between read and green
<span>http://kmbiology.weebly.com/sex-linked-traits---notes.html</span>
Answer:
Is composed of a spectrum of rays, visible light, ultraviolet and infrared light.
