Lectures 2-4
This is the age of mammals(also the age we are currently in)
What is the Cenozoic Era?
Transcribe this DNA to RNA
AGTCGA
What is UCAGCU?
Males and females looking very different is called
What is sexual dimorphism?
Later generations of a hybrid become infertility is called what
What is hybrid breakdown?
Any group of species on a tree is called this term
What is a taxon?
Many large, hard seeds remain after this event, causing beak size to grow
What is La Nina?
This is the progression of ploidy in meiosis in terms of N
What is 2N-4N-2N-N?
Name 2 outside forces that can cause selection
Predation, climatic factors, parasitism, mate attraction, resource acquisition, and more
Name 2 types of prezygotic isolating mechanisms
Temporal, Behavioral, Mechanical, Gametic, Geographical, or Ecological
Shared traits from a common ancestor are called these types of traits
What is homologous?
The Glyptodon fossil is an example of this type of proof that species are mutable
What is a missing link?
This is the phenotype and genotype ratio in a monohybrid cross
What is 3:1 and 1:2:1?
Females choosing a costly visible trait that indicates good genes is called
What is the handicap principle?
This is when a geographic barrier emerges and splits a population in 2
What is vicariance isolation?
All descendants of a single ancestor on a tree form a this term
What is a clade?
Processes that happened in the past still happen today is called
What is uniformitarianism?
This is when one gene affects another gene's expression
What is epistasis?
Organisms with traits of a higher frequency have a lower fitness (rare traits have a higher fitness) is this type of selection
What is negative frequency dependent selection?
This is when a species enters a new area with many under-used resources
What is adaptive radiation?
This is the term for a preference to the least complicated explanation
What is parsimony?
As a proponent of catastrophism, he verified that extinctions occur
Who is Georges Cuvier?
Non-random mating tends to increase this in the population
What is the frequency of homozygotes?
Also, called runaway selection, it is when a trait is selected sexually, that was once beneficial, even though it reduces the males' fitness
What is the "ghost of selection past"?
Name the 2 ways that sympatric speciation could occur
What is polyploidy and disruptive selection?
When a tree contains the MRCA but not all descendants of the MRCA, it is called this
What is paraphyletic?