What location is 20 degrees north latitude and 65 degrees west longitude

Iceland.

Explanation:

The latitude 20 degrees north and longitude 65 degrees west is present in the Atlantic Ocean, north of Puerto. The north coast region of Puerto Rico is called Porta Atlantico, which faces the dark blue Atlantic Ocean. The country that is located at 65 degrees North latitude and 20 degrees West longitude is Iceland.

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

"do a testcross with a homozygous recessive plant."