Outgroup comparison

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Outgroup comparison
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Outgroup camparison

• outgroup is used for character polarity
• outgroup is used for tree rooting

ingroup
outgroup
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Selecting Outgroup

• Do not choose an outgroup that is very distantly
  related to your taxa. This may result in serious
  topolocical errors because sites may have become
  saturated with multiple mutations by which
  information may have been erased.
• Do not choose either an outgroup that is too
  closely related to the taxa in question. In this
  case it may not be a true outgroup.
• The use of more than one outgroup generally
  improves the estimate of tree topology.

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Assignment Selecting Outgroup

• Dipterocarpaceae, Tiliaceae and Guttiferae are
  closely related plant families.
• Family Dipterocarpaceae is divided into 3
  subfamilies (Dipterocarpoideae, Pakaraimoideae
  and Monotoideae).
• There are 17 genera in the family
  Dipterocarpaceae, i.e. Pakaraimaea, Dryobalanops,
  Shorea, Neobalanocarpus, Parashorea, Hopea,
  Dipterocarpus, Vatica, Upuna, Anisoptera,
  Cotylelobium, Stemonoporus, Vateriopsis, Vateria,
  Monotes, Marquesia and Pseudomonotes.

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Family Dipterocarpaceae
Subfamily Pakarimoideae
Subfamily Dipterocarpoideae
Subfamily Monotoideae
Genus Pakaraimaea
Genus Monotes Marquesia Pseudomonotes
Genus Dipterocarpus Anisoptera Upuna
Cotylelobium Vatica Vateria
Vateriopsis Stemonoporus Dryobalanops Parashorea
Neobalanocarpus Hopea Shorea
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Study One
Select two outgroup taxa for the phylogenetic
study of these ingroup taxa Shorea parvifolia,
S. leprosula, S. lepidota, S. kunstleri, S.
paucifolia, S. roxburghii, S. farinosa, S.
seminis, S. sumatrana, S. collaris, S. rubella,
S. palembanica, S. ovata, S. rubra
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Study Two
Select two outgroup taxa for the phylogenetic
study of these ingroup taxa Shorea lepidota,
Shorea kunstleri, Shorea rubra, Hopea odorata,
Hopea dryobalanoides, Neobalanocarpus heimii,
Dipterocarpus kunstleri, Dipterocarpus
grandiflorus, Dipterocarpus costatus, Vatica
odorata, Vatica oblongifolia, Cotylelobium
mlanceolatum, Anisoptera costata, Anisoptera
curtisii, Upuna borneensis, Dryobalanops
aromatica, Dryobalanops oblongifolia
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Study Three
Select two outgroup taxa for the phylogenetic
study of these ingroup taxa Shorea kunstleri,
Shorea rubra, Hopea odorata, Neobalanocarpus
heimii, Dipterocarpus kunstleri, Dipterocarpus
costatus, Vatica odorata, Cotylelobium
mlanceolatum, Anisoptera costata, Anisoptera
curtisii, Upuna borneensis, Dryobalanops
aromatica, Monotes sp., Pakaraimaea
dipterocarpacea, Pseudomonotes sp.