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chapter 5
| Question | Answer |
|---|---|
| A Down syndrome child is always mentally impaired to some degree. | true |
| Spina bifida is a _____. | congenital disorder |
| Hereditary diseases or disorders often result from a defective gene or genes that produce a defective protein or no protein at all. | true |
| Inside the nucleus, DNA is packaged with proteins into _____. | chromosomes |
| A person with Klinefelter's syndrome, there is _____. | an extra X chromosome |
| Only gametes contain 23 chromosomes, one chromosome of each pair, a condition called _____. | haploid |
| Normally, each person has forty-four (twenty-two pairs) of chromosomes. | false |
| The loss of an autosomal chromosome is usually incompatible with life. | true |
| The Y chromosome is _____. | small and carries few genes |
| Sickle cell anemia is an _____ disorder. | autosomal recessive |
| Somatic cells contain 46 chromosomes in 23 pairs, a condition called _____. | diploid |
| Huntington's disease is an _____ disorder. | autosomal dominant |
| _____ is a disorder in which abnormal hemoglobin causes deformed red blood cells. | Sickle cell anemia |
| Cystic fibrosis is an _____ disorder. | autosomal recessive |
| Achondroplasia is an _____ disorder | autosomal dominant |
| The four chemical bases that make up DNA are adenine, thymine, guanine, and cytosine. | true |
| Congenital diseases can be transmitted to offspring. | false |
| A female has a combination of one X and one Y chromosome. | false |
| Cleft lip and cleft palate are a _____ | congenital disorder |
| Phenylketonuria is an _____ disorder | autosomal recessive |
| If two of the same allele is inherited the person is homozygous for that trait. | true |
| Cystic fibrosis affects the glands that secrete mucus, leading to recurrent, severe respiratory infections and gastrointestinal disorders. | true |
| Huntington's disease is a neurodegenerative disorder. | true |
| Familial hypercholesterolemia is an _____ disorder. | autosomal dominant |
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