Biology Ch. 11 Section 1
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____________________________ affects the nervous system, causing gradual loss of
____________________________ function. - -Huntington's Disease, brain
✅✅
____________________________ are not properly transported out of the cells of a person
with cystic fibrosis. - -chloride ions
✅✅
____________________________ causes small ____________________________ and
limbs that are comparatively short. - -Achondroplasia, body size
____________________________ is caused by the absence of the
✅✅
____________________________ responsible for breaking down fatty acids called
gangliosides. - -Tay-Sachs, enzymes
✅✅
A ____________________________ is a diagram that traces the inheritance of a particular
trait through several generations. - -pedigree
A ____________________________ shape represents an individual with the trait, while an
✅✅
____________________________ shape represents an individual without the trait. -
-filled in, unfilled
A disorder that affects the ____________________________ glands,
✅✅
____________________________ enzymes, and sweat glands is called
____________________________. - -mucus-producing, digestive, cystic fibrosis
✅✅
A horizontal line between two individuals represents ____________________________ of
the offspring listed below them. - -parents
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A recessive trait is expressed when the individual is ____________________________ for
the trait. - -homozygous recessive
✅✅
Achondroplasia is caused by an abnormal gene that affects
____________________________ growth. - -bone
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Achondroplasia is the most common form of ____________________________. -
-dwarfism
✅✅
Albinism is caused by altered genes, resulting in the absence of the skin pigment
____________________________ in hair and eyes. - -melanin
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An individual who is heterozygous for a recessive disorder is called a
____________________________. - -carrier
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Cystic fibrosis causes ____________________________ that clogs ducts in the pancreas,
interupts digestion, and blocks respiratory pathways in the lungs. - -mucus excretion
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