Upgrade to remove ads
Bio lecture exam 2
Terms in this set (55)
descent with modification
That we come from a single common ancestor
differential survival and reproduction of individuals with advantageous traits
Provide an example of descent with modification
Darwins finches were dependent on their environment but were the same species
Natural selection is what?
Adapted from the environment
Malthus theory supports which Darwin theory?
Since natural selection is not perfect, there are limits. Name the limit form the example below: Giant pandas rely on a diet o fondly bamboo. This leaves them vulnerable to extinction as bamboo is becoming scarce in recent years
Since natural selection is not perfect, there are limits. Name the limit form the example below: Emu and ostriches do not posses a keel on their sternum that typically allows other birds to fly and escape danger. However, emu and ostriches are bipeds and have legs that allow them to run at high speeds
Organisms between ancestors and modern form
Which of the following is an example of a transitional fossil?
Structures of different organisms are similar because they evolved from a single common ancestor
Which of the following below is an example of homology?
Vertebrates having pharyngeal gill slits
Biogeography is the way in which species are distributed around the world. Which of the following is an example of this?
a group of organisms of the same species populating a given area
What is the difference between a character and a trait ?
Character is a heritable feature that varies among individuals and a trait is a state of a character
A segment of dna treat carries information for making protein is..
State of a character
Provide an example of a gene
Provide an example of an allele
Exact set of two alleles an individual carries
Actual trait an individual shows
two alleles are the same
two alleles are different
Change in an allele frequency from one generation to the next
ability to survive and reproduce
What two factors are fitness dependent on?
Phenotype and the environment
A population of rabbits can have brown fur and white fur with brown fur brewing they dominant allele. By random chance, the offspring may be all brown and this could reduce or eliminate the allele for white fur. This is an example of which of the following forces of evolution?
A bee carrying pollen from one flower population to another is an example of which of the following forces of evolution?
A male rhino choosing which female within a population to reproduce with based with on traits that are favorable is an example of which of the following forces of evolution?
There are people who posses an alteration in the receptor proteins of the cell membrane in their cells. Scientists have realized that individuals with this trait are resistant to hiv because the virus is unable to bind correctly to the host cell. This is an example of which of the following forces fo evolution?
Natural disaster cause a population to become smaller
A population leaves and goes to another place to make a new population
positive assortative mating
Mate with individual with the same traits
negative assortative mating
Mate with individual with different traits
Pushes to an extreme
Pushes extremes back to average
Populations are pushed to both extremes
Frequency dependent selection is based on...
One sex picks mates based on opposite sex based on traits ( peacocks show off, dances)
One sex competes with another for the right to mate with the opposite sex (mammals, deers, moose)
Which of the following below is known to have asexual reproduction?
limits of natural selection
Only heritable traits can be acted on by natural selection, works only between generations not individuals, doesn't create new traits, doesn't lead to perfection
Example of natural selection
Finches have different beaks and during a drought ones with larger beaks survived more than the others
Requirements for a population to undergo natural selection
Reproduction, heredity, variation in characteristics and variation in fitness
Sate of a gene
A count of all the alleles within a population
Hardy Weinberg Theorem
Mathematical expression for evolution, predicts a population that is not evolving
advantage of sexual reproduction
Advantage of asexual reproduction
Ability to reproduce quickly
Form new species through geographical isolation
Despite lacking a geographical barrier, populations aren't able to intermix.
Pattern of evolution in which long stable periods are interrupted by brief periods of more rapid change
Create phylogenies for living organisms
Categorizing of living things
How do fossils form?
Most fossils form when living things die and are buried by sediments. The sediments slowly harden into rock and preserve the shapes of the organisms.
Structures are similar in unrelated organisms
OTHER SETS BY THIS CREATOR
Philosophy Quiz 3
Self & Society Final Exam
Bio Lecture Exam 3
Philosophy second quiz