Chpt 14: The Rest Of Mendel Flashcards
Homology
the degree of similarity between two things (e.g. organism or species)
Relative Dating
1 of 6 things that evidences evolution
involves sedentary rock dating
Phenology (of living things)
1 of 6 things that evidences evolution
the study of cyclic and seasonal natural phenomena, especially in relation to climate and plant and animal life.
Discrete traits
Traits that are very clearly different from one another and have no intermediate phenotypes(like round seeds vs. oblong seeds)
Quantitative Traits
Traits that are expressed on a continuum (like height or complexion)
May be effected by the environment as well as by genotype
Vestigial Structures
1 of 6 things that evidences evolution
Absolute Dating
1 of 6 things that evidences evolution
involves carbon dating
Gene-gene interaction
When one trait is influenced by the alleles of another one
Bc some traits are impacted by many, many genes, rather than just one
Pleiotropic genes
one gene, many traits
Phylogeny (of living things)
1 of 6 things that evidences evolution
The evolutionary development and history of a species or higher taxonomic grouping of organisms.
Co-dominance
When phenotypes from different alleles (for the same trait) are both expressed simultaneously/without blending.
exp, red + white = red and white spots (NOT PINK)
“Normal” distribution
When results plotted on a graph form a bell curve
Incomplete dominance
When no particular allele for a trait is completely dominant over an other
Produces intermediate phenotypes (so red and white can give you pink)
Polygenic inheritance
when many genes each contribute (a little bit, each) to the final phenotype (for continuous traits)
Wild type
The most common phenotype seen in a wild population
