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Q. No.The genotypic expression seen in a person of blood group AB is called
1. dominant-recessive.
2. codominance.
3. incomplete dominance.
4. corecession.
Subtopic: Co-dominance |
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The genetic basis of hemophilia, so common within European royal families, was revealed by studies of
1. DNA sequences.
2. chromosomes in gametes.
3. family pedigrees.
4. prenatal gene products.
1. DNA sequences.
2. chromosomes in gametes.
3. family pedigrees.
4. prenatal gene products.
Subtopic: Mendelian Disorders: Hemophilia |
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The syndrome in humans in which an individual's somatic cells contain only the one sex chromosome X/O is called
1. Klinefelter's.
2. Turner's.
3. Down's.
4. superfemale.
1. Klinefelter's.
2. Turner's.
3. Down's.
4. superfemale.
Subtopic: Chromosomal Disorders |
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A woman receives her X chromosomes from
| 1. | her mother only. |
| 2. | her father only. |
| 3. | both her mother and her father. |
| 4. | extranuclear DNA in her |
Subtopic: Sex Determination |
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The condition in which there are more than two complete sets of chromosomes is called
1. aneuploidy
2. polytene
3. polyploidy
4. monoploidy
1. aneuploidy
2. polytene
3. polyploidy
4. monoploidy
Subtopic: Non - Disjunction & Aneuploidy |
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A diagram of a pedigree shows
| 1. | controlled matings between members of different true-breeding strains |
| 2. | the total genetic information in human cells |
| 3. | a comparison of DNA sequences among genomes of humans and other species |
| 4. | the expression of genetic traits in the members of two or more generations of a family |
Subtopic: Pedigree Analysis: Basics |
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Which pattern of inheritance is associated with a trait that (1) is not usually expressed in the parents, (2) is expressed in about one fourth of the children, and (3) is expressed in both male and female children?
| 1. | autosomal recessive | 2. | autosomal dominant |
| 3. | X-linked recessive | 4. | X-linked dominant |
Subtopic: Mendelian Disorders |
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An abnormality in which there is one more or one fewer than the normal number of chromosomes is called a(an)
1. karyotype
2. fragile site
3. aneuploidy
4. trisomy
1. karyotype
2. fragile site
3. aneuploidy
4. trisomy
Subtopic: Chromosomal Disorders |
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An individual who is missing one chromosome, having only one member of a given pair, is said to be
1. monosomic
2. haploid
3. trisomic
4. consanguineous
1. monosomic
2. haploid
3. trisomic
4. consanguineous
Subtopic: Chromosomal Disorders |
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An inherited disorder caused by a defective or absent enzyme is called a(an)
1. karyotype
2. trisomy
3. reciprocal translocation
4. inborn error of metabolism
1. karyotype
2. trisomy
3. reciprocal translocation
4. inborn error of metabolism
Subtopic: Mendelian Disorders |
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