If Gerry's Genotype Contains a Copy of the Dominant "Freckles

question 547

Multiple Choice

If Gerry's genotype contains a copy of the dominant "freckles" gene:

• A) he will never develop freckles even with exposure to sunlight.
• B) he will inevitably develop freckles regardless of environmental influences, such as exposure to sunlight.
• C) he will not develop freckles unless the expression of that dominant gene is triggered by a specific environmental factor, sunlight.
• D) it will also contain two inherited recessive genes that need to be activated in order for him to develop freckles.