Genetic counselling is the process of evaluating family history and medical records, ordering Genetic test, evaluating the results of investigations, helping parents understand and reach a decision about what to do next. Aberration basically behaviour air action not acceptable. These are the defects in genetic makeup due to change in structure, a number of chromosome an abnormality in genes. Genomic mutations are due to the change in a number of chromosomes. The chromosomal aberrations are due to the change in the morphology of the chromosome. Gene mutations caused by a change in nucleotide. Take this quiz and know more about genetic counselling and aberration.
1. Is it possible to say when a gene will mutate?
A. Sometimes
B. Always
C. Never
D. None of these
2. An abnormality not due to the recessive gene is...
A. Phenylketonuria
B. Polydactyly
C. Alkaptonuria
D. Tay-sach's syndrome
3. Which one of the following is holandric inheritance?
A. Haemophilia
B. Epidermolysis
C. Turner's syndrome
D. Webbed toes
4. Most of the mutations are...
A. Recessive
B. Dominant
C. Lethal
D. Spontaneous
5. Which of the following mutations are not hereditary?
A. Genetic
B. Somatic
C. Germinal
D. Gametic
6. A number of Barr bodies in XXY syndrome is...
A. 1
B. 2
C. 3
D. 4
7. Gene mutation occurs at the time of...
A. DNA repair
B. RNA transcription
C. Cell division
D. DNA replication
8. Condition of not having exact multiple of the haploid set is...
A. Aneuploidy
B. Polyploidy
C. Synploidy
D. None of these
9. The frequency of down's syndrome increases when maternal age is...
A. Below 35
B. Above 35
C. At the time of first pregnancy
D. After wearing three children
10. Replacement of one type of purine with another type is...
A. Translocation
B. Transversion
C. Transition
D. Insertion
11. In which syndrome of child mewed like a cat?
A. Patsy's
B. Edward
C. Klinefelter
D. Cry-du-chat
12. The percentage of defective offspring increases during old age pregnancy because of...
A. Weak body
B. Ovaries become weak
C. Oocytes show disjunction
D. Week placenta
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