inheritance

• What are the key terms in the topic of inheritance?

  • Genotype
  • Phenotype
  • Homozygous
  • Heterozygous
  • Recessive alleles
  • Dominant alleles
  • Monohybrid inheritance
  • Dihybrid inheritance
  • Codominance
  • Multiple alleles
  • Sex linkage
  • Autosomal linkage
  • Epistasis
• What is the definition of genotype?

  Genetic constitution of an organism
• What does phenotype refer to?

  Expression of genes and environmental interaction
• What does homozygous mean?

  Two identical alleles for a gene
• What does heterozygous mean?

  Two different alleles for the same gene
• When are recessive alleles expressed?

  Only if no dominant alleles are present
• What is the rule for dominant alleles?

  Always expressed in the phenotype
• What does monohybrid inheritance refer to?

  Inheritance of one gene at a time
• What does dihybrid inheritance refer to?

  Inheritance of two genes at the same time
• What are the five different types of inheritance?

  1. Dominance
  2. Multiple alleles
  3. Sex linkage
  4. Autosomal linkage
  5. Epistasis
• What is dominance in genetics?

  Both dominant alleles are expressed
• What are multiple alleles?

  More than two options for a single gene
• What is sex linkage?

  Gene located on the X chromosome
• What is autosomal linkage?

  Genes located on the same chromosome
• What is epistasis?

  One gene modifies the expression of another
• What is the coding for monohybrid inheritance?

  One letter for the gene, capital and lowercase
• How is codominance represented in genetic coding?

  Base letter with superscript for alleles
• What is the probability of having a red cow from two roan parents?

  25% probability
• What are the blood group phenotypes mentioned?

  A, B, AB, and O
• What is the probability of offspring having blood group A from AB and O parents?

  50% probability
• What is the probability of children being colorblind from a carrier female and non-colorblind male?

  25% probability
• How can you determine which type of inheritance to use?

  • Count the number of phenotypes:
  • Two phenotypes: Monohybrid
  • More than two phenotypes: Codominance or multiple alleles
  • Check if it's specified as sex-linked
• Where can viewers find more questions on inheritance?

  Miss Esther's website
• What should viewers do if they find the video helpful?

  Give it a thumbs up