Explore topic-wise MCQs in Cytogenetics.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Cytogenetics knowledge and support exam preparation. Choose a topic below to get started.

1.

You cross two heterozygous disc shaped squash. What will be the ratio obtained?

A. 1:2:1
B. 3:1
C. 9:3:3:1
D. 9:6:1
Answer» E.
2.

If you cross two sphere shaped squash, you always get a disc.

A. True
B. False
Answer» C.
3.

If you cross a true breeding long with a true breeding disc shaped squash, what will you get in the F1?

A. Disc
B. Sphere
C. Long
D. Disc and long in 3:1
Answer» B. Sphere
4.

IF_YOU_CROSS_A_TRUE_BREEDING_LONG_WITH_A_TRUE_BREEDING_DISC_SHAPED_SQUASH,_WHAT_WILL_YOU_GET_IN_THE_F1??$

A. Disc
B. Sphere
C. Long
D. Disc and long in 3:1
Answer» B. Sphere
5.

You cross two heterozygous disc shaped squash. What will be the ratio obtained?$

A. 1:2:1
B. 3:1
C. 9:3:3:1
D. 9:6:1
Answer» E.
6.

If you cross two sphere shaped squash, you always get a disc.$

A. True
B. False
Answer» C.
7.

The cross between a true breeding sphere shaped and a long shaped squash gives 30 sphere squash in F2. What is the total number of expected progeny?

A. 30
B. 40
C. 50
D. 60
Answer» C. 50
8.

Which one of the following summer squash would be true breeding?

A. Sphere
B. Disc
C. Long
D. Short
Answer» D. Short
9.

In summer squash if you cross different varieties of true breeding sphere shaped squash, you get a disk shaped progeny. What phenomenon is seen here?

A. Gene interaction
B. Epistasis
C. Multiple allele
D. Codominance
Answer» B. Epistasis
10.

If a true breeding rose combed chicken is crossed to walnut combed chicken, what are the only possibilities of the F1 progeny?

A. Walnut
B. Rose
C. Walnut or rose
D. Walnut or rose or pea
Answer» D. Walnut or rose or pea
11.

If you cross two walnuts, which of the following is impossible?

A. Progeny to be a walnut
B. Progeny to be a single
C. Progeny to be a homozygous Rose
D. Progeny to have a phenotype other than rose, single, pea or walnut
Answer» E.
12.

You cross a true breeding pea comb chicken with a single comb chicken. What will you observe in the F2 generation?

A. Ratio 1:2:1
B. Ratio 3:1
C. Ratio 9:3:3:1
D. All pea combed
Answer» E.
13.

In case of comb shape of a chicken, which of the following when inbred will breed true?

A. Rose
B. Pea
C. Walnut
D. Single
Answer» E.
14.

Gene interaction always modifies the normal Mendalian ratio.

A. True
B. False
Answer» C.
15.

The difference in epistasis and gene interaction is ___________________

A. Gene interaction involves two genes
B. Epistasis modifies the normal Mendelian ratio
C. Epistasis involves two genes
D. Gene interaction produces a novel phenotype
Answer» E.