Biology Questions
Explore questions in the Biology category that you can ask Spark.E!
The antennae of male moths can only detect sex pheromones released by a female in his species. This reproductive barrier is:
(True/False) systematists can never be sure of finding the best tree in a large data set
Longer branches of the phylogenetic tree indicates
(True/False) systematists narrow the possibilities of the best tree in a large data set by applying principles of max parsimony and lineage
In other phylogenetic trees, branch length can be proportional to _____, and branching points can be determined from the _____
fossil record supports that dinosaurs participated in _____, linking them to birds and crocodiles
phylogenetic bracketing _____(allows/doesn't allow) us to predict features of an ancestor from features of its descendants
Characteristics between the branch points of a cladogram that are shared by all organisms above the branch point and are not present in any below it are called A. homologousB. adaptiveC. convergentD. derivedE. ancestral
Characters shared by the outgroup and ingroup are _____(ancestral/derived) characters that predate the divergence of _____(the out-group/the in-group/both groups) from a common ancestor
the evolutionary history of a group of organisms can be represented in a
phylogenetic trees show patterns of _____ (descent/phenotypic similarity), not _____(descent/phenotypic similarity)
changing the orientation of a phylogenetic tree _____(does/doesn't) change the relationship between groups
an order of snails have _____(more/less) genetic diversity than an order of mammals
clades can be nested in _____(smaller/larger) clades, but not all groupings of organisms qualify as clades
a character _____(can/cannot) be both ancestral and derived
Phenotypic and genetic similarities due to shared ancestry are called
the broader taxa _____(are/aren't) comparable between groups
organisms with similar morphologies or DNA sequences are like to be _____(more/less) closely related than organisms with different structures or sequences
classifies organisms and determines their evolutionary relationships
A phylogeny shows that legless lizards and snakes evolved from different lineages of what?