Ichthyostega is a 370-million-year-old fossil from Greenland. Ichthyostega had digits, eyes on the top of its head, and strong,
armlike bones. It also had no gills and a reduced tail. Acanthostega, Eusthenopteron, and Tiktaalik all had gills and full tails. Which organism would you place Ichthyostega closest to on this phylogenetic tree?
Explanation: Phylogenetic tree is a diagram that represents evolution patterns of species. The ramification of the tree indicates how the species evoluted from a series of commom ancestor. Two species are closely related if the ancestor is closer to them. By it, it means that two species are closer if their characteristics are similar to each other. As the question stated, Ichthyostega had digits and reduced tail. Among the three others, Acanthostega has arms with digits, gills, tails and no fin.
So, in the phylogenetic tree, the branch that has acanthostega would be closer to the one with Ichthyostega, as this one is likely the descendent of the previous one.
The bacteria over time has built up a tolerance over the antibiotic , when this happens people usually make a different antibiotic that could be more affective for example how a person gets sore when they workout that muscle is building a tolerance to the stress you put it though therefore it grows
What is the greatest danger to a patient who has had damage to the skin? excessive muscle contractions in the damaged area loss of oils produced by the skin infections in uncovered tissues damaged tissues entering the blood stream?
