Dihybrid Crosses (VCE SSCE Biology): Flashcards

Genetic cross tracking inheritance of two genes

Genes on different chromosomes or far apart on same chromosome

First, Outside, Inside, Last alleles for gamete combinations

$9:3:3:1$ ratio

Genes close together on same chromosome, inherited together

1% chance of crossing over

Chromosome with same allele combination as parent's chromosome

Chromosome created by crossing over, not identical to parent's

Slash notation: Be/bE (alleles on one/alleles on other)

Random orientation of homologous chromosomes in metaphase I