A: In the phylogram above, what is the outgroup? ? Faughnia + Erythrosquilla d.
ID: 176701 • Letter: A
Question
A: In the phylogram above, what is the outgroup?
? Faughnia + Erythrosquilla d.
? Parasquillidae
? Taku
? Not enough information to tell
? Faughnia
PLEASE?NOTE THERE CAN BE MORE THAN ONE CORRECT ANSWERS.
B. In the phylogram above only unambiguous characters are mapped to the clades. If a bootstrap analysis were done on the data matrix that produced this tree, it would probably
? show less support for branches with fewer characters
? have the same level of resolution
? support a different topology
? collapse some branches
? omit the outgroup
PLEASE?NOTE THERE CAN BE MORE THAN ONE CORRECT ANSWERS
27 26 24 18 8 326 21 23 3 1 1 3 S 2 0 29 26 0 1 PARASQUILLIDAE Faughnia Erythrosquilla ERYTHROSQUILLDAE Lysiosquilla LYSIOSQUILLIDAE 39 Acanthosquilla NANNOSQUILLIDAE 2 LH Hadrosquilla 486 Coronida 12 3 3 30 37 CORONIDIDAE Acoridon 35 18 Paracoridon Tetrasquilla TETRASQUILLIDAE L Tectasquilla 34 Heterosquilla HETEROSQUILLIDAE Heterosquilloides Eurysquilla EURYSQUILLIDAE ALAINOSQUILLIDAE Alainosquilla Pseudo squilla PSEUDOSQUILLIDAE Hemisquilla HEMISQUILLIDAE Odontodactylus ODONTODACTYLIDAE 17 15 9 Haptosquilla I PROTOSQUILLIDAE 20 2 Gonodactylus GONODACTYLIDAE Taku I TAKUIDAEExplanation / Answer
A. Option B is the correct answer. Outgroup is a reference group which is used in determinibg the evolutionary relationship between other groups. Thus outgroup serves as a point of reference for other groups that allows phylogeny to be rooted.
And outgroup is not a part of the ingroups.
Thus only Parasquillidae here serves as an outgroup.