In your text you have an example for the use of the statistical methods in phylo
ID: 45379 • Letter: I
Question
In your text you have an example for the use of the statistical methods in phylogeny inference in mammals. According to the Theria hypothesis, placental mammals (Eutheria) and marsupials (Metatheria) are sister groups, with monotremes (Prototheria) more distantly related. By contrast, the Marsupionta hypothesis places the marsupials and monotremes as sister groups, with the eutherian mammals more distantly related. Keith Killian and his coworkers (2001) used the DNA sequence data to test these hypotheses. What was their reasoning?
If the
If the
Explanation / Answer
Keith Killian and his coworkers (2001) used the DNA sequence data to test Theria and Marsupionta hypotheses. The statistical analysis of nuclear gene unambiguously supporting morphology based theria hypothesis that excludes the clade of monotremes from marsupials and placental mammals (eutherians). According the work of Keith Killian and coworkers if the Theria hypothesis was correct, the placental and marsupial mammals would form a single monophyletic clade. Option 3 is correct.