A gene directs the synthesis of a protein<span> by a two-step process. First, the instructions in the </span>gene<span> in the DNA are copied into a messenger RNA (mRNA) molecule. The sequence of nucleotides in the </span>gene<span> determines the sequence of nucleotides in the mRNA. This step is called transcription.</span>
C. is your correct answer.
The
correct answer is no.
<span>The
development of retinoblastoma occurs as a consequence of mutation of genes RB1
or MYCN. Those mutations occur in the early stages of fetal development and affect
the way in which cells grow and develop within the body. The more common is the
defective RB1 gene that can be inherited from either parent. The expression of
the RB1 allele is autosomal dominant.</span>
<span>Geologists generally know the age of a rock by determining the age of the group of rocks, or formation, that it is found in. The age of formations is marked on a geologic calendar known as the geologic time scale. Development of the geologic time scale and dating of formations and rocks relies upon two fundamentally different ways of telling time: relative and absolute.</span>
The vertebrate endoskeleton is internal while an arthropod's exoskeleton is not
