Chapter 4: Extensions of Mendelian Genetics

  1. Pedigree practice

  2. Identify the carriers
  3. A gene is found at a region on a chromosome called its
    1. locus.
    2. allele.
    3. phenotype.
    4. synapse.
    5. karyotype.
  4. In codominance, the phenotypic ratio from crossing heterozygotes is
    1. 1:1.
    2. 1:2:2:1.
    3. 1:2:1.
    4. 9:3:3:1.
    5. 3:1.
  5. ________ occurs when one gene masks the effect of another gene.
    1. Epistasis
    2. Codominance
    3. Genomic imprinting
    4. Penetrance
    5. Incomplete dominance
  6. In recessive X-linked diseases, the most likely scenario is:
    1. father passing disease to daughter.
    2. mother passing disease to son.
    3. son inherits disease from father.
    4. daughter inherits disease from mother.
    5. both mother and father are carriers.
  7. The human ABO blood group is determined by ________ alleles.
    1. multiple
    2. X-linked
    3. temperature-sensitive
    4. pleiotropic
    5. incomplete dominance