In this chapter you read about Jenelle Stephenson, who has sickle cell disease, and Samuel Evangelista, who was diagnosed with severe combined immunodeficiency. Both Jenelle and Samuel were affected by genetic disorders caused by recessive alleles, but Samuel’s disorder was sex-linked whereas Jenelle’s was not. Match each characteristic below with the corresponding type of disorder. Note that each disorder label (sex-linked, recessive, or dominant) can match more than one target.

Question

In this chapter you read about Jenelle Stephenson, who has sickle cell disease, and Samuel Evangelista, who was diagnosed with severe combined immunodeficiency. Both Jenelle and Samuel were affected by genetic disorders caused by recessive alleles, but Samuel’s disorder was sex-linked whereas Jenelle’s was not. Match each characteristic below with the corresponding type of disorder. Note that each disorder label (sex-linked, recessive, or dominant) can match more than one target.

recessive disorder
sex-linked disorder
dominant disorder
can be passed to the next generation by a carrier
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can occur in the presence of a single recessive allele
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can occur with a single dominant allele
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can occur with two recessive alleles
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Answer 1

- can be passed to the next generation by a carrier: recessive disorder

- can occur in the presence of a single recessive allele: recessive disorder
- can occur with a single dominant allele: dominant disorder
- can occur with two recessive alleles: recessive disorder