Chapter 4 Vocabulary

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created 7 years ago by Gr8NursingStdnt
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Chapter 4 Vocabulary words Only
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College: Second year
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1

Cystic Fibrosis

An often fatal recessive genetic disorder associated with abnormal secretions of exocrine glands

2

Marfan Syndrome

An autosomal dominant genetic disorder that affects the skeletal system, the cardiovascular system, and the eyes

3

X-linked

The pattern of inheritance that results from genes located on the X chromosome

4

Y-linked

The pattern of inheritance that results from genes located only on the Y chromosome

5

Hemizygous

A gene present on the X chromosome that is expressed in males in both the recessive and the dominant conditions

6

Color blindness

Defective color vision caused by reduction or absence of visual pigments. There are three forms: red, green, and blue blindness

7

Muscular Dystrophy

A group of genetic diseases associated with progressive degeneration of muscles. Two of these, Duchenne and Becker MD, are inherited as X-linked allelic recessive traits

8

Huntington Disease

An autosomal dominant disorder associated with progressive neural degeneration and dementia. Adult onset is followed by death 10-15 years after symptoms appear

9

Penetrance

The probability that a disease phenotype will appear when a disease-related genotype is present

10

Expressivity

The range of phenotypes resulting from a given genotype

11

Camptodactyly

A dominant human genetic trait that is expressed as immobile, bent, little fingers