Gene Tree and Species Tree

Question 1

What causes gene tree incongruence?

Answer 1

Incomplete lineage sorting
horizontal gene transfer
gene duplication and loss
hybridization
recombination

Question 2

It causes gene tree incongruence which affects small DNA segments

Answer 2

horizontal gene transfer

Question 3

Species tree estimation can be done by:

Answer 3

concatenation
multispecies coalescence
supertree method
Bayesian concordance analysis
site-based methods

Question 4

True or False: The two events - mutation and speciation are not expected to occur at the same time

Answer 4

True

Question 5

Gene typically diverges before ______

Answer 5

speciation

Question 6

phylogenetic tree based on divergence of one single homologous gene

Answer 6

gene tree

Question 7

it gives the evolutionary history of gene

Answer 7

true

Question 8

True or False: more genes are needed to build species tree

Answer 8

True