Presentation - Dominant and Recessive Traits

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Transcript Presentation - Dominant and Recessive Traits

What the difference between dominant
and recessive genes?
Dominant is always expressed when
present. Recessive is only expressed
when no dominant genes are present.
Students will be able to…
 Set-up and use a Punnett Square to
predict traits in offspring
 Compare dominant and recessive genes
and traits and observe them in humans.
Investigating Allele
Frequencies in the Classroom
Are dominant traits more common then
recessive ones?
Not always. A recessive trait can be more
common in some populations.