5. What are thepenetrance
and theexpressivityof a
gene?

Gap-fill exercise

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Individuals that carry a genotype
do not always in an identical
manner correspondent phenotype.
These manifestations differ in
intensity,from one to
another, or even phenotype may not
manifest some percentage of carriers.

penetrance is the percentage
phenotypical manifestation of a
a given population of individuals
(same genotype). Gene is
the degree (intensity) the
phenotypical manifestation of genein
each individual or of individuals
that carry gene (same genotype).
The penetrance and the gene
may be influenced by
environment.