A sex-linked inheritance or sex linkage is the transmission of characters or traits through genes present on the sex chromosome. Most of the sex-linked genes are present on the X chromosome leading to X-linkage and very few genes are present on the Y chromosome that control Y-linkage called holandric traits. Morgan and Bridge worked on Drosophila fly to prove experimentally that genes are present on the chromosomes and sex-linked genes show crisscross inheritance. So, take this quiz and check your knowledge about sex-linked inheritance of sex linkage.
1. Who discovered sex linkage?
A. Miller
B. Thomas Morgan
C. Robert Hook
D. Robert Brown
2. Sex-linked traits always show _________ inheritance.
A. Parallel
B. Perpendicular
C. Criss-cross
D. None of these
3. What will be the percentage of hemophilic progeny when a normal man marries a hemophilic female?
A. 75%
B. 50%
C. 25%
D. 100%
4. The Y chromosome, which determines the male sex of the individual is....
A. Androgen
B. Gynosperm
C. Androsome
D. Androecium
5. Color blindness person show defects in....
A. Cones
B. Iris
C. Rods
D. Eye muscles
6. Colorblind people cannot distinguish...
A. All colors
B. Green color
C. Blue color
D. Red and green color
7. Color blindness is a ....
A. X-linked dominant trait
B. X-linked recessive trait
C. Y-linked dominant trait
D. Y-linked recessive trait
8. How many general types of hemophilia?
A. 5
B. 7
C. 9
D. 3
9. Which hemophilia occurs due to the reduction in the amount of factor VIII/ AHF (antihemophilic factor)?
A. Hemophilia A
B. Hemophilia B
C. Hemophilia C
D. All of these
10. Hemophilia B occurs due to the reduction in the amount of factor IX/......
A. AHF (antihemophilic factor)
B. PTC ( plasma thromboplastin component)
C. PTA ( plasma thromboplastin antecedent)
D. None of these
11. Which hemophilic is rare?
A. Hemophilic A
B. Hemophilic B
C. Hemophilic C
D. All of these
12. What is the other name of color blindness?
A. Hemophilia
B. Christmas disease
C. Night blindness
D. Daltonism
13. Color blindness is more commonly seen in .....
A. Female
B. Male
C. Equal in both
D. None of these
14. The gene of color blindness is present on ......
A. X chromosome
B. Y chromosome
C. Autosome
D. None of the above
15. Hemophilic carrier females are normal but they express the trait in the next generation this phenomenon is called .....
A. First generation
B. Second generation
C. Skip generation
D. Third generation
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