Which structures are part of the appendicular skeleton? A
The upper arm (humerus)
The spine (vertebral column)
The ribcage (thoracic cage)
The skull (cranium)

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation:

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.