Explore topic-wise MCQs in Cytogenetics.

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
Discussion
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
Discussion
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
Discussion
4.

Choose the odd one out.

A. Color blindness
B. Haemophilia
C. Duchenne muscular dystrophy
D. Faulty tooth enamel
Answer» E.
Discussion
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
Discussion
6.

Y linked inheritance is _______________ inheritance.$

A. Criss cross
B. Straight
C. Loop
D. Jumping
Answer» C. Loop
Discussion
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
Discussion
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
Discussion
9.

Which of the following is partially sex linked?

A. Complete colorblindness
B. Hypertrichosis
C. Faulty tooth enamel
D. Haemophilia
Answer» B. Hypertrichosis
Discussion
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
Discussion
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
Discussion
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.
Discussion
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
Discussion
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
Discussion
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
Discussion
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.
Discussion
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
Discussion
18.

All genes in sex chromosomes are sex linked.

A. True
B. False
Answer» C.
Discussion