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

how can you calculate frequency between two linked genes?

  • Ans 1: Frequency between two linked genes can be calculated by the following formula
    Recombination frequency=Recombination type
    --------------------------* 100
    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

how can you calculate frequency between two linked genes?

  • Ans 1: Frequency between two linked genes can be calculated by the following formula
    Recombination frequency=Recombination type
    --------------------------* 100
    Sum of all combinations
Submit

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

Question # 1

Define co-dominance.

  • Ans 1: Different alleles of a gene that are both expressed in a heterozygous condition are called co-dominance e.g MN blood group system.
Submit

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

Question # 1

What is Pleiotropy? Give one example.

  • Ans 1: When a single gene affects two or more traits the phenomenon is called pleiotropy. E.g, genes that effect growth rate in human also influence both weight and height.
Submit

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

Question # 1

Explain testicular feminization syndrome.

  • Ans 1: Testicular feminization syndrome is a rare X linked recessive trait.Although the persons affected by this trait have a set of XY chromosome.Yet tfm gene on their X chromosome develops them physically into females.They have breast,female genitalia a blind vagina but no uterus,degenerated testis are also present in abdomen.Such individuals are happily married as female but are sterile.it is an androgen insensitivity syndrome.Male sex hormone testoterone has no effect on them.
Submit

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

Question # 1

Differentiate between homozygous and heterozygous.

  • Ans 1: Homozygous: If alleles of a gene pair are in similar from they are called homozygous.
  • Ans 2: Heterozygous: If the alleles of a gene pair are in different from they are called heterozygous.
Submit

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

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

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?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!