Principles of Inheritance and Variation

Class 12 · Biology

47 questions26 easy13 medium8 hard

Sample Questions

Q1.Linked genes are genes that:

  • AAre on the same chromosome
  • BAlways produce the same phenotype
  • CCannot recombine
  • DAre always dominant

Q2.A hemophilia carrier female (X^H X^h) crossed with a normal male (X^H Y) will produce:

  • A50% hemophilic sons
  • BAll hemophilic daughters
  • CNo hemophilic offspring
  • DAll sons hemophilic

Q3.When genes are completely linked (no crossing over), the testcross ratio would be:

  • A9:3:3:1
  • B1:1:1:1
  • C1:1 (parental types only)
  • D3:1

Q4.The principle of segregation is demonstrated during which stage of meiosis?

  • AProphase I
  • BMetaphase II
  • CAnaphase II
  • DTelophase II

Q5.A 9:3:3:1 ratio in F2 generation indicates:

  • ASingle gene with dominance
  • BTwo genes assorting independently
  • CThree genes involved
  • DIncomplete dominance

Q6.This is a sample question to preview what you'll get in the full practice test...

  • A. Option one
  • B. Option two
  • C. Option three
  • D. Option four
Create a test to practice all 47 questions →

Concepts Covered

Alleles and genesBackcrossChromosome theoryDihybrid crossDominance and recessivenessGenetic mappingLaw of independent assortmentLaw of segregationLinkage and crossing overMendel's lawsMonohybrid crossMultiple allelesPedigree analysisTest cross

Ready to practice?

Create a timed test from 47 questions in Principles of Inheritance and Variation. Pick your difficulty, get instant scores.

Start Practice Test