Genetic Cross

• Genetic Cross:

  • Parent Pheno = round, yellow
  • Parent Geno = RRYY
  • Possible Gametes = RY RY
  • Offspring Geno = RrYy
  • Offspring Pheno = round, yellow
  • Proportion of Pheno = 100%
• Crossing over in meiosis can result in new combinations outside of the predicted ratio
• Crossing over involves homologous pairs link after interphase, tension causes a split and cross over chromatids and alleles