General Genetics

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Suppose a disease-causing allele shows autosomal recessive inheritance. How could a carrier of this disease-causing allele be identified?

carriers often show reduced activity for the enzyme encoded by the allele

True or false: Dizygotic twins share a genetic disease more frequently than monozygotic twins.

false

A dominant genetic disorder can be caused by ____________, a situation where one functional copy of an allele is not sufficient to produce a normal phenotype.

haploinsufficency

Twins that are genetically identical to each other are called ______ twins.

monozygotic

Chronic villus sampling is a procedure for_____________

obtaining a sample of the fetal part of the placenta

True or false: Genetic diseases often show a specific age of onset.

true


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