MEDIUM
12th CBSE
IMPORTANT
Earn 100

Colour blindness in humans is a sex-linked trait. Explain with the help of a cross.

Important Questions on Principles of Inheritance and Variation

MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 5 - Principles of Inheritance and Variation>SELF-ASSESSMENT TEST>Q 7
How can you say that the sex of a child is determined by the father and not by the mother?
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 5 - Principles of Inheritance and Variation>SELF-ASSESSMENT TEST>Q 8
Why is haemophilia generally observed in men? Under what condition can women also suffer from this disorder?
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 5 - Principles of Inheritance and Variation>SELF-ASSESSMENT TEST>Q 9
How does a test cross help in identifying the genotype of the organism? Explain.
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 5 - Principles of Inheritance and Variation>SELF-ASSESSMENT TEST>Q 10
When tall pea plants were selfed some of the offsprings were dwarf. Explain with the help of a Punnett square.
HARD
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 5 - Principles of Inheritance and Variation>SELF-ASSESSMENT TEST>Q 11
What is heterogamety? Explain the mechanism of sex determination in Drosophila.
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 5 - Principles of Inheritance and Variation>SELF-ASSESSMENT TEST>Q 12
Why did T.H. Morgan select Drosophila melanogaster as a specimen for his experiments?
HARD
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 5 - Principles of Inheritance and Variation>SELF-ASSESSMENT TEST>Q 12
Morgan, in his dihybrid crosses with Drosophila observed deviations in the phenotypic ratio of F2 progeny in comparison to that of Mendel. With the help of a suitable example, explain how his results deviated from that of Mendel.