View Complete Answer & Explanation
Question (English)
When parents of one generation pass the sex-linked character to the opposite sex in the next generation, this pattern of inheritance is known as:
- Sex-limited inheritance
- Criss-cross inheritance ✓ Correct
- Holandric inheritance
- Sex-influenced inheritance
Explanation:
Correct Answer: Criss-Cross Inheritance
As per the notes (Table 7): Criss-cross inheritance = a parent of one generation passes the sex-linked character to the opposite sex in the next generation.
Two Types of Criss-Cross Inheritance
- Diagenic: Father → Daughter → Grandson
- Diandric: Mother → Son → Granddaughter
Two Types of Non-Criss-Cross Inheritance
- Holandric: Father → Son → Grandson (Y-linked, e.g., hypertrichosis, TDF)
- Hologenic: Mother → Daughter → Granddaughter
Why Other Options Are Wrong
- Sex-limited: Gene on autosome; expressed in only one sex (e.g., milk production, semen production). No criss-cross pattern.
- Holandric: Y-linked traits pass only from father to ALL sons — same sex transmission, opposite of criss-cross.
- Sex-influenced: Gene on autosome; hormonal environment causes different expression between sexes (e.g., horn condition in Dorset sheep).
📚 About this Topic — Animal Genetics & Breeding
This multiple choice question is from Animal Genetics & Breeding, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Genetics & Breeding to strengthen your preparation.
