Answer:
Genetic variability refers to a species's genetic variation as a whole. Specific changes in DNA fragments or genes are referred to as genetic variants, and each mutation of a gene is referred to as an allele.
Explanation:
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<span>the deliberate modification of the characteristics of an organism by manipulating its genetic material.</span>
Answer:
sensory (afferent ) neurons
Explanation:
afferent or "sensory" neurons receive information from the external world and convey this information to the brain via the spinal cord .
A molecular clock is a method used by researchers that uses mutation rates in DNA to estimate the length of time that two species have been evolving independently. This provides evidence of evolutionary descent because it can link to common ancestors.
