What is criss-cross inheritance?

Important Questions on Principles of Inheritance and Variation

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 26

Why are sex linked recessive characters more common in the male human beings?

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 27

What are holandric genes?

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 28

Mention the symptoms of Phenylketonuria.

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 29

Mention the symptoms of Down syndrome.

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 30

Explain the genetic basis of ABO blood grouping in man.

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 31

How is sex determined in human beings?

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 32

Explain male heterogamety.

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 33

Brief about female heterogamety.