genetics Flashcards
are the units of heredity composed of DNA molecules that are transferred from the parents of offspring
genes
the scientific study of genes and how they affect heredity
genetics
father of modern genetics
Gregor Mendel
One of two or more alternative forms of a gene
allele
trait that is expressed
dominant trait
trait that is masked in the presence of a dominant trait
recessive trait
first filial or first generation of offspring
F1 generation
Generation produced by interbreeding individuals of the F1 generation
F2 generation
Reproductive or sex cell
Gamete
Genetic composition of an individual
Genotype
Observable characteristics of an individual
Phenotype
Organisms that have two different alleles for the same trait
heterozygous
Organisms that have two identical alleles for a particular trait
Homozygous
diagram used to predict an outcome of a particular cross or breeding experiment
punnet square
is the branch of mathematics that explains the likelihood that a particular event will occur
Probability