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

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Biology - 12th Class Biology Chapter 22 Short Questions Preparation

Question # 1

What are multiple alleles,give its example?

  • Ans 1: When a gene exists in more than two alternate forms called multiple alleles.Blood group ABO is an example of multiple alleles.
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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

What are multiple alleles,give its example?

  • Ans 1: When a gene exists in more than two alternate forms called multiple alleles.Blood group ABO is an example of multiple alleles.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 2

Question # 1

Define gene linkage and gene linkage groups.

  • Ans 1: Gene linkage: Gene linkage is the tendency of DNA sequences that are close together on a chromosomes to be inherited together during the meiosis phase of sexual reproduction.
  • Ans 2: Gene linkage groups: In genetics all of the genes on a single chromosome are inherited as a group i.e during cell division they act and move as unit rather than independently.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 3

Question # 1

Differentiate between monohybrid and dihybrid cross.

  • Ans 1: Monohybrid: A cross between two organisms which differ only in one character is called monohybrid cross.
  • Ans 2: Dihybrid: A cross between two organisms which differ only in two character is called dihybrid.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 4

Question # 1

What is dominance?Discuss over dominance.

  • Ans 1: Dominance is a physiological effect of an allele over its partner allele on the same locus.
    Over dominance: This relation is very interesting because the over dominant heterozygote exceed in quantity than phenotypic expression of both the homozygotes. In fruit fly Drosophila the heterozygote(W+/w) has more quantity of florescent pigments in eyes than wild (w+/w+) or white eye (w/w) homozygote.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 5

Question # 1

Differentiate between monohybrid and dihybrid cross.

  • Ans 1: Monohybrid: A cross between two organisms which differ only in one character is called monohybrid cross.
  • Ans 2: Dihybrid: A cross between two organisms which differ only in two character is called dihybrid.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 6

Question # 1

Why is blood group AB called as universal recipient?

  • Ans 1: AB blood group is called recipient because they have both A and B antigens but no antibodies,so they can easily accept or receive any type of blood group i.e,A,B,AB or O
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12th Class Biology Chapter 22 Short Questions

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