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vocab 1
vocab 2
vocab 3
evolution of populations
evolution of populations 2
100
a form of natural selection in which individuals at one end of a distribution curve have higher fitness than individuals at either the middle or the other end of the curve
What is directional selection?
100
a trait controlled by one gene that has two alleles
What is single-gene trait?
100
a situation in which the allele frequencies in a population remain the same
What is genetic equilibrium?
100
natual selection acts directly on
What is phenotype?
100
passing of genes from one organism to another organism that is not its offspring
What is lateral gene transfer?
200

a change in allele frequencies as a result of the migration of a small group of a population

What is founder affect?

200
a form of natural selection in which individuals near the center of a distribution curve have higher fitness than individuals at either end of the curve
What is stablizing selection?
200
the number of times that an allele occurs in a gene pool, compared to the total number of alleles in that pool for that same gene
What is allele frequency?
200
the situation in which allele frequencies in the gene pool of a population remain constant is called
What is genetic equilibrium?
200
mutation rates in DNA are used to estimate the time that two species have been evolving independently
What is molecular clock?
300
all the genes, including all of the different alleles for each gene, that are present in a population at any one time
What is gene pool?
300
a population whose members can breed and produce fertile offspring
What is species?
300

a form of natural selection which individuals of the upper and lower ends of a distribution curve are higher fitness than individuals near the middle of the curve

What is disruptive selection?

300
what situation might exist in a population if some flowers open at midday and others open late in the day
What is temporal isolation?
300
populations that are very different from each other are less likely to
What is compete for resources?
400
a trait controlled by two or more genes
What is polygenetic trait?
400

the separation of a species or population so that members can no longer interbreed

What is reproductive isolation?

400
a change in allele frequency following a dramatic reduction in the size of a population
What is bottleneck effect?
400
a random change in alleles in a population is most likely caused by
What is genetic drift?
400
a small group of individuals in a particular population emigrate to another area and establish a new population is described as
What is founder effect?
500
a random change in allele frequency caused by a series of chance occurences that cause an allele to become more or less common
What is genetic drift?
500
a method that uses mutations rates in DNA to estimate the length of time that two species have been evolving independently
What is molecular clock?
500
the process by which individuals select mates on the basis of heritable traits
What is sexual selection?
500
HOX genes control
What are patterns of embryological development?
500
a change in the genetic makeup of a cell is
What is a mutation?