Answer:B.) Substitution
Explanation: Mutations are permanent changes in the nucleotide sequence of a DNA molecule. Substitution leads to a point mutation if only one nucleotide is replaced by another.
A substitution mutation occurs when one or more nucleotides in a DNA sequence is replaced by another nucleotide.
Example of substitution is in sickle cell hemoglobin in which valine replaces glutamate at position six in the two beta chains of hemoglobin. In a normal hemoglobin, the two beta chains of hemoglobin have glutamate at the sixth position but in a sickle cell hemoglobin, valine is found at position six on the two beta chains. This is also an example of a point mutation.
Defenses against herbivory and adaptations related to wind dispersal of pollen are likely to cause human health problems.
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What are defense responses against herbivores?</h3>
The first line of defense in plants is an intact and impenetrable barrier composed of bark and a waxy cuticle. Both protect plants against herbivores.
Other adaptations against herbivores include hard shells, thorns (modified branches), and spines (modified leaves).
They discourage animals by causing physical damage or by inducing rashes and allergic reactions.
Some Acacia tree species have developed mutualistic relationships with ant colonies: they offer the ants shelter in their hollow thorns in exchange for the ants’ defense of the tree’s leaves
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The legs, wings, or fins most of the time are used in locomotion and sometimes in defense.
These are two functions of an animal's movement structures like wings, legs, or fins:
- migrating to mating spots
These structures are like structural adaptation defenses. These structures might be for defense, movement and for obtaining resources which might include food.
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Answer:
Prefrontal Cortex. People who have successfully have their Prefrontal Cortex removed via lobotomy have demonstrated diminished intensity in emotions and a more stable personality. Others described their demeanour as child-like.
Left Hemisphere. Removal of the left hemisphere has been done successfully in the past using a procedure called Hemispherectomy. One case reports a five-year-old who due to seizures had the left part of his brain removed completely.
He went on to live a normal life and even developed some superior skills especially in the area of language.
Occipital Lobe
There is a case with a boy who was only 6 years and 11 months when the removal of the occipital lobe amongst other parts was performed on him. By the time he was 11, his brain had rewired itself.
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The part of the aorta that arches and turn down Ward
