Answer:
A substitution is a mutation that exchanges one base for another (i.e., a change in a single "chemical letter" such as switching an A to a G). Such a substitution could: change a codon to one that encodes a different amino acid and cause a small change in the protein produced.
Answer:
This should help you understand more about DNA replication
and it also has a picture.
By assembling the rocks into parts of a bigger rock that might have eroded over time.
Answer:
The answer is juxtamedullary nephrons. Hope this helps.
