Answer:Ridge push
Explanation: hope this helps <3
The vertebrate endoskeleton is internal while an arthropod's exoskeleton is not
Answer:
Ribosomes are the site where proteins are produced. Amino acids are coded for by triplet bases in RNA called codons
Explanation:
The correct answer is absence of jaws.
Lampreys and hagfish are in the class Agnatha, they are jaw-less fish. The members of the agantha class are probably the earliest vertebrates. Scientists have found fossils of agnathan species from the late Cambrian period that occurred 500 million years ago.
Answer
Most of these techniques, including microarray analysis and reverse transcription polymerase chain reaction (RT-PCR), work by measuring mRNA levels. However, researchers can also analyze gene expression by directly measuring protein levels with a technique known as a Western blot.
