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Rutgers Camden Genetics
Prep for exam 2 Carroll
4
Nursing
Undergraduate 1
10/20/2014

Additional Nursing Flashcards

 


 

Cards

Term
Individual carries ________ for each autosomal gene (non sex gene)
Definition
two alleles
Term

Incomplete Dominance


The ______ phenotype is between those of the two _______

Definition

The heterozygous phenotype is between those of the two homozygotes 


Example: Familial hypercholesterolemia (FH)


Heterozygote has approx. 1/2 the normal # of receptors in liver for LDL cholesterol


Homozygous, for the mutant allele, lacks the receptor so their serum cholesterol level is very high

Term

Codominance:Heterozygous phenotype results from expression of both alleles

 

Example: A.B.O. gene encodes cell surface glycoprotein


     Explain how this is possible (taken right from notes)

Definition

    IA allele produces A antigen

IB allele produces B antigen

i (IO) allele does not produce an antigen


   Alleles IA and IB are codominant, and both are completely dominant to i (IO)


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