Question

Holandric genes are present on ______________.

• A. homologous part of X chromosome
• B. homologous part of Y chromosome
• C. non-homologous part of X chromosome
• D. non-homologous part of Y chromosome

Hint:

Holandric inheritance shows father-to-son transmission only.

Answer 1

The Correct Option is D

Step 1: Understanding holandric genes.
Holandric genes are those genes that are transmitted exclusively from father to son and are associated only with the Y chromosome.
Step 2: Location of holandric genes.
These genes are located on the non-homologous region of the Y chromosome, which does not pair with the X chromosome.
Step 3: Elimination of incorrect options.
Genes on homologous regions are shared between X and Y chromosomes.
X-linked genes cannot be holandric.
Step 4: Conclusion.
Therefore, holandric genes are present on the non-homologous part of the Y chromosome.