Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Evolution Exam 3

TermDefinition
Thomas Morgan Showed that genes are linked in a series on chromosomes and are responsible for identifiable hereditary traits.
Gregor Mendel Dominant and recessive. Founded alleles.
Allele One version of a gene at a particilar locus.
Genotype Genetic makeup of an individual (combination of alleles).
Mutation Random change in the DNA sequence of a gene.
Homozygous Genotype in which both alleles are the same version.
Heterozygous Genotype in which alleles are different versions.
DNA to RNA Transcription
RNA to Protein Translation
Phenotype Outward espression of genotype.
P Dominant
Q Resessive
P2+2PQ+Q2=1 Genotype frequencies
P+Q=1 Allele frequencies
Assumprions of HWE No mutation, Infinitely large population size, No natural selection, Random mating, No migration
Predation Predators best able to catch prey, Prey best able to avoid predators.
Competition Individuals best able to find and secure resources relative to others
Parasitism Individuals best able to fight off infections and survive sickness
Temperature Tolerance to specific temps and temp fluctuations
Precipitation Tolerance to specific amounts of percipitation or fluctuations
Substrate Tolerance for levels of nutriens and minerals.
Cool Air Low pressureand low pressure is bad at holding water
sinking dry air increases pressure increasing temps
Continental climate inland climate is highly variable, prone to temp/weather fluctuations
Maritime climate coastal climate is stable, water holds and looses heat mroe slowly than air
Parent material type of rock (Metamorphic, igneous, sedamentary)
Nutrient content which nutrients and in what concentrations
Mineral content What minerals are present and in what concentration
Aspect at what angle is the ground facing relative to the sun? How much direct sunlight is the ground getting
Selection Change in allele frequencies over time due to differential probability of survival and reproduction among certain traits.
Polygenic Inheritance Mode of genetic inheritance in which a single trait is controlled by multiple genes
Quantitative Traits Traits that are determined through the cumulative “actions” of multiple genes – AKA, traits that exhibit continuous, rather than discrete, variation
Mutation evolution Random increase in genetic variation; not predictable
Gene Flow evolution Increase in single populations, decrease overall; direction not predictable
Drift evolution Random change in allele frequence due to sampling error and random events; Not predictable
Selection evolution predictable increase in beneficial alleles
Adaptaion A trait that increases an organisms fitness in a given enviornment
Spatial variation variation across space like climate or predator density
Temporal variation variation across time like sesonal temps or pollenators
Intraspecific variation variation within a species or population
Scale of movement How far it can travel
Phenotypic plasticity variation in a trait due to the impact of the enviornemnt on an organisms development (ex thickness of leaves)
Common Guarden experiment a type of experiment where individuals from diffrent enviornemnts are raised in an identical enviornment to see if they have phenotypic plasticity or a variable trait
Dmitry Belyaev Study with foxes
Genetic drift change in allele frequencies over time due to chance (natural disaster, bottle neck, founder effect, inbreeding)
extinction vortex small population -inbreeding- low diversity- lower fitness- smaller population
Natural selection and genetic drift work with alleles that are already present in a population
Gene flow and mutation work to add new alleles into a population
Gene flow movement of allels between populations through migration and sucessful intermiximg
Created by: krcollins147
Popular Biology sets

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards