The virus is unable to replicate.
Answer:
75% one eye, 25% two eyes (or 3:1 one eye: two eye)
Explanation:
The cross between the two trolls are shown in the attached punnett square
Ee x Ee gives 3 genotypes: EE, Ee, and ee
at a ratio of :1 EE: 2 Ee: 1 ee
Ee and EE are both one eye genotypes, so the <em>phenotype </em>is 3:1 one eye to two eye.
The cells of SA node acts as the heart's peacemaker which establishes the pace for cardiac activity.
Sinoatrial node is also called sinus node.
SA node is termed as a group of cells which are located in the wall of the right atrium of the heart. Cells have the ability to produce electrical impulse. It travels to the heart via electrical conduction system which causes it to contract.
It produces action potential and also sets the rhythm of the heart.
