The proportions of nitrogenous bases in the DNA of two different human tissues (thymus and sperm) are . *

are about the same.

Explanation:

This is a great question! From our previous knowledge of biology, we can recall that all of the cells in an individual body began with a single cell.

It is worthy to note that the singular cell went though cell division more than once, that is to say it went through cell divison many, many times to produce around 50 trillion or so cells that comprises of an individual body. Almost all of the cells in your body share the same DNA as was found in that first cell*.

This explains why body cells and tissues in a certain individual entail the same DNA.

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in