12th Class Fsc Biology Online Preparation for chapter 22 (Variation and Genetics)

Online Short Questions For Chapter 8 "12th Class Biology Chapter 22 Short Questions Preparation "

Try The Short Questions For 12th Class Biology Chapter 22 Short Questions Preparation

  • Total Questions10

  • Available Sets6

Start Test Download PDF

Biology - 12th Class Biology Chapter 22 Short Questions Preparation

Question # 1

Define recombination frequency.Give an example.

  • Ans 1: It is the proportion of recombinant type between two gene pairs as compared to sum of all combinations.
Submit

Prepare Complete Set Wise Questions For Chapter 8 "12th Class Biology Chapter 22 Short Questions Preparation "

12th Class Biology Chapter 22 Short Questions Preparation - Set 1

Question # 1

Define recombination frequency.Give an example.

  • Ans 1: It is the proportion of recombinant type between two gene pairs as compared to sum of all combinations.
Submit

12th Class Biology Chapter 22 Short Questions Preparation - Set 2

Question # 1

Differentiate between multiple alleles and polygenes..

  • Ans 1: Multiple alleles: If a gene has more than two alternate forms these are called multiple alleles.For example alleles for ABO blood group. E.g,alleles for ABO blood group.
  • Ans 2: Polygenes: When a continuously varying trait is controlled by alleles for two or more than two different gene pairs found at different loci,all influencing the same trait in an additive way,such genes are called polygenes, e.g,genes for controlling skin and eye colour in human.
Submit

12th Class Biology Chapter 22 Short Questions Preparation - Set 3

Question # 1

State Law of independent assortment.

  • Ans 1: When two contrasting pairs of traits are followed in the same cross,their alleles are assorted independently into gametes.
Submit

12th Class Biology Chapter 22 Short Questions Preparation - Set 4

Question # 1

How sex is determined in plants?

  • Ans 1: Plants show a variety of sexual situations.Some species like Ginkgo are dio-ecious having plants of separate sexes.Male plants produce flower with only stamens and female plants produce flower with only carpels.Some dioecious plants have a difference of sex chromosome between the sexes.These have an X-Y system.These plants typically exhibit an X-choromosome autosome balance system for sex determination.
Submit

12th Class Biology Chapter 22 Short Questions Preparation - Set 5

Question # 1

What is monochromacy?

  • Ans 1: Monochromacy means only one colour can be perceived by the colour blind person.Monochromacy is true colour blindness.
Submit

12th Class Biology Chapter 22 Short Questions Preparation - Set 6

Question # 1

What is test cross? Give its significance?

  • Ans 1: Test cross is a cross used to test the genotype of an organism showing dominant phenotype.
    Significance of test cross is that we can know the genotype of an organism
Submit

ic-science-white
Biology
22th Chapter

12th Class Biology Chapter 22 Short Questions

Here you can prepare 12th Class Biology Chapter 22 (Variation and Genetics). Click the button for 100% free full practice.

Start Chapter 22 Preparation

Is this page helpful?