MCQOPTIONS
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MCQOPTIONS
This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Cytogenetics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Y linked inheritance is _______________ inheritance. |
| A. | Criss cross |
| B. | Straight |
| C. | Loop |
| D. | Jumping |
| Answer» C. Loop | |
| 2. |
What is the probability that the son of a color blind father would be color blind? |
| A. | 0 |
| B. | 1/4 |
| C. | 1/2 |
| D. | 1 |
| Answer» B. 1/4 | |
| 3. |
If colorblindness was a dominant trait, which of the following would not be true? |
| A. | It would be expressed in heterozygous females |
| B. | It would be expressed in males |
| C. | It would never be turned off |
| D. | It would not skip generations |
| Answer» D. It would not skip generations | |
| 4. |
Choose the odd one out. |
| A. | Color blindness |
| B. | Haemophilia |
| C. | Duchenne muscular dystrophy |
| D. | Faulty tooth enamel |
| Answer» E. | |
| 5. |
IF_COLORBLINDNESS_WAS_A_DOMINANT_TRAIT,_WHICH_OF_THE_FOLLOWING_WOULD_NOT_BE_TRUE??$ |
| A. | It would be expressed in heterozygous females |
| B. | It would be expressed in males |
| C. | It would never be turned off |
| D. | It would not skip generations |
| Answer» D. It would not skip generations | |
| 6. |
Y linked inheritance is _______________ inheritance.$ |
| A. | Criss cross |
| B. | Straight |
| C. | Loop |
| D. | Jumping |
| Answer» C. Loop | |
| 7. |
What_is_the_probability_that_the_son_of_a_color_blind_father_would_be_color_blind?$ |
| A. | 0 |
| B. | 1/4 |
| C. | 1/2 |
| D. | 1 |
| Answer» B. 1/4 | |
| 8. |
A turner child born to normal parents is haemophilic. Where did the non-disjunction occur? |
| A. | Mother |
| B. | Father |
| C. | Zygote |
| D. | Grand mother |
| Answer» C. Zygote | |
| 9. |
Which of the following is partially sex linked? |
| A. | Complete colorblindness |
| B. | Hypertrichosis |
| C. | Faulty tooth enamel |
| D. | Haemophilia |
| Answer» B. Hypertrichosis | |
| 10. |
Which of the following is a Y linked gene? |
| A. | Faulty dental enamel |
| B. | Haemophilia |
| C. | Hypertrichosis |
| D. | Phenyl ketone urea |
| Answer» D. Phenyl ketone urea | |
| 11. |
Which_of_the_following_is_wrong? |
| A. | Y chromosome lacks dosage compensation |
| B. | X linked genes are inherited as criss cross |
| C. | Y linked gene like haemophilia passes from father to son |
| D. | X linked recessive genes are carried by females |
| Answer» D. X linked recessive genes are carried by females | |
| 12. |
A colorblind mother and a normal father give birth to a Klinefelter child with normal vision. Where do you think the non-disjunction has taken place? |
| A. | 1<sup>st</sup> meiotic division of mother |
| B. | 2<sup>nd</sup> meiotic division of the father |
| C. | 2<sup>nd</sup> meiotic division of mother |
| D. | 1<sup>st</sup> meiotic division of father |
| Answer» E. | |
| 13. |
In a family of four including a normal mother, a normal father, a color blind son and a normal son; who do you think has the defective X gene other than the affected son? |
| A. | The mother |
| B. | The father |
| C. | The normal son |
| D. | The effected son only |
| Answer» B. The father | |
| 14. |
X linked dominant trait tends to be milder in heterozygous females. State if it is true or false. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
Genes which are present in the homologous region of X and Y chromosomes are called______________ |
| A. | Autosomal |
| B. | Sex linked |
| C. | Partially sex linked |
| D. | Unlinked |
| Answer» D. Unlinked | |
| 16. |
A Y linked gene ___________________ |
| A. | Is expressed only when homozygous |
| B. | Is present near the telomere of long arm in human |
| C. | Is carried by mother |
| D. | Expressed only in men |
| Answer» E. | |
| 17. |
An X linked recessive gene would appear to __________________ |
| A. | Be expressed in both males and females equally |
| B. | Skip generations |
| C. | Be lethal |
| D. | Gradually degrade |
| Answer» C. Be lethal | |
| 18. |
All genes in sex chromosomes are sex linked. |
| A. | True |
| B. | False |
| Answer» C. | |