Inferior to this level, nerve roots collectively called the project from the spinal cord. these nerve roots are so named because they resemble a horse’s tail. within this "horse’s tail" is the . this is a thin strand of mater that anchor the conus medullaris to the .

 Inferior to this level, nerve roots collectively called the Cauda equina project inferiorly from the spinal cord. These nerve roots are so named because they resemble a horse’s tail. Within this "horse’s tail" is the Filum terminale. This is a thin strand of pia mater that helps anchor the conus medullaris to the coccyx.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides