The mRNA strand is complementary to the DNA template strand; however, uracil instead of adenine is paired with thymine best describes the model of the mRNA strand being transcribed.
<h3>What is mRNA?</h3>
This is referred to as messenger RNA and is a type of single-stranded RNA which is involved in protein synthesis. It carries the genetic information needed to make proteins and is complementary to the DNA template strand.
It however has a different base pair to DNA such that uracil instead of adenine is paired with thymine.
This base pair difference is therefore described as the most appropriate choice in the description of the mRNA strand.
Read more about mRNA here brainly.com/question/12388408
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Deletions occur when a chromosome breaks and some genetic material is lost. Deletions can be large or small, and can occur anywhere along a chromosome.
I believe the correct response would be B. Of humans.