Answer:
The average trait value changed in one direction.(In this case, larger size)
Explanation:
In evolution a natural selection can be disruptive, directional or stabilizing
In stabilizing no extreme trait is favored hence provides intermediate values .
Disruptive selection both extreme traits are favored over the intermediate trait.
Directional, the enviroment will favor the survival of one trait hence a change in direction either towards the left or the right.
In the case of swallow cliff mortality, selection favored the larger size.
Answer:
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The answer would be false. the correct answer would be stock <span />
Answer:
The correct answer would be crawling and sucking reflex.
Crawling reflex is the reflex by which baby make crawling movements when placed on abdomen.
It helps in the baby to find his or her mother and food.
Sucking reflex helps the baby to eat food. Through this reflex, the baby starts sucking when area around the mouth is touched. For example, when the nipple is placed inside the mouth of the baby, he or she starts sucking.
Answer:
Option 2, Arousal
Explanation:
Reticular activating system (RAS) or the ascending arousal system consists of nuclei and tracts and is involved in the regulation of wakefulness, sleep aspects and arousal.
RAS is located in the mesopons and interacts with the basal forebrainand thalamocortical systems. It activates the cerebral cortex and thereby maintain the consiusness. The neurons located at the pontomesencephalic junctionparticipates in this activity of arousal.
Hence, option 2 is correct
