Answer:
Deletion and Insertion
Explanation:
DNA and RNA are read in frames of 3 base pairs, called codons. Adding or deleting a base pair shifts the arrangement of the following base pairs, changing the content of the following codons.
Pia mater (soft inner layer of the dural membrane system) The pia mater, which contains vessels, is the innermost layer of the three meningeal membranes. ... Furthermore, it creates the choroid plexus, a network of bold vessels, which enter the brain ventricles and produce the cerebrospinal fluid (CSF).
I would say the correct answer is "Care for their offspring"
Scientific method
a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
