Updated: 5/26/2021

Storyboard Text

  • Now, we already know about the different Non-Mendelian Inheritance. Let us review!
  •  In codominance, both alleles are expressed in the offspring.
  •  In incomplete dominance, there is a blending of the two alleles resulting in a third phenotype which is a mixture of both alleles.
  • Multiple alleles are three or more possible alleles for one individual trait.
  • Epistasis occurs when the expression of a gene is controlled by the expression of another gene and Lethal alleles are alleles that cause the death of the organism that carries them. 
  • Multifactorial inheritance is when more than one factor causes a trait or health problem, such as a birth defect or chronic illness.
  • We also should know the difference between Sex-limited traits, which are express or visible only in one sex, and Sex-influenced traits, which do not show distinctive expression between women and men.
  • Lastly, we should know that sex-linked occurs in which a gene is located on a sex chromosome.
  • I hope you all understand our lesson. Thank you for listening!