The correct answers would be, Environmental, Epigenetic, Switches.
Explanation:
Individuals who acquire a health condition with no prior family history of that condition may have had exposure to an Environmental factor that caused an Epigenetic Mutation. These Mutations alter the chemical switches that turn the genes on or off.
The physical structure of the DNA is changed or altered by the Epigenetic Mutation. For example the DNA methylation, which is an addition to the methyl group, and prevents specific genes from being expressed.
Learn more about Epigenetic Mutation at:
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Answer:
Human Skeleton Anatomy Key
clavicle
scapula
thoracic vertebrae
lumbar vertebrae
pelvis
sacrum
coccyx
femur
patella
tibia
fibula
phalanges
metatarsals
tarsals
phalanges
metacarpals
carpals
radius
ulna
humerus
xiphoid process
ribs
sternum
manubrium
cervical vertebrae
cranium
calcaneus
Explanation:
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Precontemplation and maintenance shows stage of change
