Joshua, Two, Has Been Diagnosed with _____, a Disorder That

question 95

Multiple Choice

Joshua, two, has been diagnosed with _____, a disorder that is found more often in the American Jewish population. Unfortunately, for most children with this abnormality death is likely by age five.

• A) spina bifida
• B) Tay-Sachs disease
• C) sickle-cell anemia
• D) Huntington's disease

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Definitions:

Polymorphism

The occurrence of two or more clearly different morphs or forms, also referred to as alternative phenotypes, in the population of a species.

Mutated Allele

A variant form of a gene that has undergone a mutation, leading to changes in the gene's DNA sequence which may affect the organism's traits.

Homozygous

Having two identical alleles of a particular gene or genes.

Heterozygous

A genetic condition where an individual has two different alleles of a gene, one inherited from each parent.