As a result of a mutation the DNA sequence AGT - TGA - CAT changes to AAT - TGA - CAT Which best describes the mutation?
It is a substitution in which the DNA base, G, was replaced with a different DNA base, A
O It is a deletion in which the DNA base, G was replaced with a different DNA base, A
It is a substitution in which three DNA bases AGT, were replaced with three different DNA bases, AAT.
O It is a deletion in which three DNA bases, AGT were replaced with three different DNA bases, AAT
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above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.

the ems is the abbreviation for the emergency medical services. it is a service provided by a group of medical professionals specialised doctors and other healthcare staff.

any one can call 911 in case of any medical emergency and a group of health care professional will come and give the treatment required. every day the ems staff receive many phone call, which are related to different types of medical emergencies, out of which 25-28% are exclusively related to the respiratory issues.

so, the correct answer is 25-28%.