Introduction to Medical Inheritance: Patterns in Families - BM5 RCR1

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1. Approximately how many recessive genetic diseases does the average person carry an allele for?

  • 20-30
  • 5-10
  • 10-20
  • 1-5
1 of 20

Other questions in this quiz

2. Two parents are heterozygous carriers of an autosomal recessive disease. What is the probability that their first child will have that condition?

  • 75%
  • 25%
  • 50%
  • 100%

3. In most cases, an individual born with an autosomal recessive disease has parents who are both asymptomatic obligate carriers. If this is the case, what is the risk of a subsequent child having the same condition?

  • 25%
  • 100%
  • 50%
  • 75%

4. Which of the following is the most accurate definition for hemizygous?

  • Having two of the same alleles at a locus
  • Having two or more genetically different cell lines derived from a single zygote
  • Having only one copy of a gene or DNA sequence in a diploid cell
  • Having two different alleles at a locus

5. True or false: Y-linked conditions will affect all sons from an affected father?

  • True
  • False
  • Pass
  • Mary


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