Principles of Inheritance & Variation

Home > Botany (36) > Principles of Inheritance & Variation (3)
Q1. How many of the given genetic disorders are due to mutations in autosomal genes?
I: Sickle cell anaemia
II: Thalassemia
III: Phenylketonuria
IV: Haemophilia
  • 1
  • 2
  • 3
  • 4
Q2. Match each item in Column-I with one in Column-II and select the correct match from the codes given [assume independent assortment wherever applicable]:
Column-I Column-II
A. Number of types of genotypes in F2 progeny of a dihybrid cross P. 4
B. Number of types of phenotypes in a dihybrid test cross Q. 9
C. Number of types of phenotypes in F2 progeny  in three polygenes R. 7
S. 8
  • Q   P   S
  • Q   P   R
  • P   Q   R
  • P   Q   S
Q3. Which of the following is a dominant trait in Pisum sativum?
  • Yellow pod colour
  • Green seed colour
  • Axial flower position
  • Constricted pod shape