Non-Mendelian Inheritance
This term describes a heterozygote that displays a blended phenotype, like pink snapdragons.
This term uses mutation rates to estimate the time since two species diverged.
What is a molecular clock?
This term occurs when allele frequencies remain constant across generations.
What is Hardy-Weinberg Equilibrium?
This value (h2) measures the proportion of trait variance due to additive genes.
What is narrow-sense heritability?
This unit of genetic distance is equal to a 1% recombination frequency.
What is a centiMorgan?
The term for one single gene affecting multiple, seemingly unrelated physical traits.
What is pleiotropy?
These structures look similar due to shared ancestry.
What is homology?
This term describes a type of drift that occurs when a small group colonizes a new, isolated area.
What is the Founder Effect?
These genes determine offspring phenotype based solely on the mother's genotype.
This term describes two genes located on the same chromosome.
This phenomenon occurs when the expression of one gene masks or interferes with another.
What is Epistasis?
These genes are duplicates within a single species that often evolve new functions.
What are paralogs?
This is the term for an allele’s frequency reaching 100% within a population.
What is fixation?
These highly conserved genes determine the body plan along the anterior-posterior axis.
What are Hox genes?
This disequilibrium describes the non-random association of alleles at different loci.
What is Linkage Disequilibrium?
This is the percentage of individuals with a specific genotype who actually express the trait.
What is penetrance?
This term describes a neutral allele that spreads because it is near a beneficial one.
What is hitchhiking?
This type of selection actively maintains polymorphism in a population.
What is balancing selection?
These signaling molecules form a gradient to provide positional info to developing cells.
What are morphogens?
This phenomenon occurs when one crossover event inhibits a second one nearby.
This type of inheritance involves DNA found in the mitochondria or chloroplasts.
What is extranuclear inheritance?
This term describes a trait that evolved for one use but was later co-opted for another.
What is Exaptation?
This term involves individuals choosing partners with similar phenotypes.
What is assortative mating?
This process occurs when one group of cells induces a change in the fate of a neighbor.
What is induction?
This type of cross is used to determine both the distance and the order of three genes.
What is a 3-point testcross?