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

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Biology - 12th Class Biology Chapter 22 Short Questions Preparation

Question # 1

What is contribution of Carl Correns in genetics?

  • Ans 1: Carl Correns discovered the phenomenon of incomplete dominance.
    He crossed red flowered 4 O clock plant with while flowered 4 O clock plant.In f1pink flowers were produced instead of red color was dominant.He again crossed pink flowers from F1,in F2 red,pink white flowers obtained with ratio 1:2:1 respectively.
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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 is contribution of Carl Correns in genetics?

  • Ans 1: Carl Correns discovered the phenomenon of incomplete dominance.
    He crossed red flowered 4 O clock plant with while flowered 4 O clock plant.In f1pink flowers were produced instead of red color was dominant.He again crossed pink flowers from F1,in F2 red,pink white flowers obtained with ratio 1:2:1 respectively.
Submit

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

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 3

Question # 1

What is nullo gametes?

  • Ans 1: A gamete without sex chromosomes is called nullo gamete.For Example Grasshopper male produce 50% nullo gametes and 50% with sex chromosomes.
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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.
Submit

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

Question # 1

What is nullo gametes?

  • Ans 1: A gamete without sex chromosomes is called nullo gamete.For Example Grasshopper male produce 50% nullo gametes and 50% with sex chromosomes.
Submit

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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Biology
22th Chapter

12th Class Biology Chapter 22 Short Questions

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