7.1.3 Codominance and Multiple Alleles

    Cards (44)

    • Match the inheritance pattern with an example:
      Codominance ↔️ Blood type AB
      Complete dominance ↔️ Brown eyes vs blue eyes
    • What is the phenotype of roan cattle in codominance?
      Speckled red and white
    • In codominance, the phenotype of a heterozygote is a combination of traits from both alleles
    • Codominance occurs when two different alleles of a gene are both fully expressed in the phenotype
    • How do heterozygotes in codominance differ from homozygotes?
      Display distinct traits
    • What feather color do BW heterozygotes exhibit in Andalusian chickens?
      Blue-gray
    • Match the genetic inheritance pattern with its example:
      Multiple Alleles ↔️ Human Blood Types (A, B, O)
      Codominance ↔️ AB Blood Type
    • What is the definition of codominance in genetics?
      Both alleles are fully expressed
    • How do heterozygotes differ in codominance compared to complete dominance?
      Distinct traits from homozygotes
    • Blue-gray feathers in Andalusian chickens are an example of codominance.

      True
    • In human blood types, which antigen is expressed in codominance for type AB blood?
      Both A and B
    • In codominance, what happens to allele expression?
      Both alleles are fully expressed
    • In humans, blood type AB is an example of codominance
    • Multiple alleles refer to the presence of more than two alleles for a particular gene
    • In human blood types, which allele is recessive?
      O
    • Arrange the alleles of the C gene in rabbits according to their dominance hierarchy:
      1️⃣ C (full color)
      2️⃣ c^h (Himalayan)
      3️⃣ c^e (chinchilla)
      4️⃣ c (albino)
    • In codominance, there are only two alleles for a gene, while in multiple alleles, there are more than two in the population
    • An example of codominance is blood type AB, while an example of complete dominance is brown versus blue eyes
    • AB blood type in humans is an example of codominance.

      True
    • Match the examples of codominance with their descriptions:
      AB blood type ↔️ Expresses both A and B antigens
      Roan cattle ↔️ Mix of red and white hairs
      Andalusian chickens ↔️ Blue-gray feathers from black and white alleles
    • Arrange the rabbit coat color alleles from most dominant to least dominant:
      1️⃣ C (full color)
      2️⃣ c^h (Himalayan)
      3️⃣ c^e (chinchilla)
      4️⃣ c (albino)
    • Match the inheritance patterns with their examples:
      Codominance ↔️ AB blood type
      Multiple alleles ↔️ ABO blood group in humans
    • In codominance, heterozygotes display traits intermediate between the two alleles.

      True
    • Individuals with blood type AB express both A and B antigens
    • What is the key difference between codominance and complete dominance?
      Allele expression
    • Order the steps involved in analyzing codominance in inheritance:
      1️⃣ Define the genetic inheritance pattern
      2️⃣ Identify the heterozygous genotype
      3️⃣ Express both allele traits in the phenotype
    • In codominance, the heterozygous phenotype combines traits from both alleles
      True
    • Roan cattle exhibit codominance with red and white hair colors.
      True
    • Multiple alleles are present in the population but individuals can only carry two alleles at a time.

      True
    • The ABO blood group in humans is determined by three alleles: A, B, and O
    • What are the four possible blood types in the ABO system?
      A, B, AB, O
    • What is the key difference between codominance and multiple alleles in terms of allele expression?
      Codominance expresses both alleles fully
    • What is codominance in genetics?
      Both alleles are expressed
    • What is the phenotype of heterozygous offspring in codominance?
      Combination of both alleles
    • What is the definition of multiple alleles?
      More than two alleles
    • In human blood types, which alleles are codominant?
      A and B
    • What is the significance of codominance in inheritance?
      Greater diversity of phenotypes
    • In rabbits, the C gene controls coat color with four alleles.

      True
    • Codominance and multiple alleles are both genetic inheritance patterns.

      True
    • Codominance is a genetic inheritance pattern where two different alleles are both fully expressed in the phenotype.

      True