Mendelian Genetics
The allele that masks the expression of another allele.
Dominant allele.
Cell division that cuts the chromosome number in half.
Meiosis.
A cross tracking the inheritance of two traits simultaneously.
Dihybrid cross.
Cellular structure that contains an organisms genetic material.
Chromosome.
Organism possessing two identical alleles for a single gene.
Homozygous.
The specific phase where crossing over occurs in meiosis.
Prophase 1
Phenotype where both alleles are fully and separately expressed.
Codominance.
Location of a specific gene on a chromosome.
Locus
Law stating that alleles separate during gamete formation.
law of segregation.
The point where non-sister chromatids physically cross over.
Chiasma.
Blended phenotype resulting from one allele not hiding another
Incomplete dominance
Genes located close together on the same chromosome.
linked genes.
The phenotypic ratio of 9:3:3:1 indicated this cross type.
Dihybrid cross
Failure of chromosomes to separate properly during division.
nondisjunction
One gene masking or altering another genes expression.
Diagram showing the relative locations of genes on chromosomes.
Linkage map.
Formula used to test if observed data fits expected.
Chi-Square test
Stage where homologous pairs align randomly at the equator.
Metaphase 1
Traits controlled by the combined effects of multiple genes.
Polygenic traits.
Organelle DNA inherited exclusively from the maternal parent (mother)
Mitochondrial DNA