<h3><u>Answer;</u></h3>
D) Mutations lead to new genes, which may have an advantage over the old forms, causing the species to evolve.
<h3><u>Explanation;</u></h3>
- <em><u>Mutations are sudden, random changes that occur spontaneously in the genetic make up of an organism.</u></em> Mutation are caused by various factors which includes errors in meiosis, and other factors such as chemical mutagens.
- <em><u>Mutations may be beneficial and may play an important role in evolution as they are raw material of genetic variation</u></em>. <em><u>Mutations may lead to genetic variations in the genetic make up of an organism . Therefore mutations are important to mutation since they create new DNA sequences for a given gene and thus resulting to new alleles.</u></em>
Those are very fragile. It also depends on how bad of injury. There are tiny little bone that are sometimes hard to see.
Try the second one or the third one
Answer:
They are present in all living organisms.
Explanation:
Cells are the basic structures of all living organisms.
The electrocardiogram most be affected by abnormally slow repolarization of ventricles SA node.
Repolarization occurs because of an growth in potassium permeability. on the SA node, potassium permeability may be further enhanced through vagal stimulation. This has the effect of hyperpolarizing the cellular and decreasing the charge.
The T wave represents ventricular repolarization. The T wave reveals a high quality deflection. The motive for that is that the ultimate cells to depolarize inside the ventricles are the primary to repolarize.
The SA node generates an electrical sign that causes the top coronary heart chambers to settlement. The signal then passes thru the AV node to the decrease heart chambers, causing them to contract, or pump. The SA node is considered the pacemaker of the coronary heart.
Learn more about electrocardiogram here:-brainly.com/question/7172728
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