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In a testcross involving F(1) dihybrid f...

In a testcross involving `F_(1)` dihybrid flies, more parental-type offsping were produces than the recombinant-type offspring. This indicates

A

Both of the characters are controlled by more than-one gene

B

The two genes are located on two different chromosomes.

C

Chromosomes failed to separate during meiosis

D

The two genes are linked and present on the same chromosome

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Di-tert-glycols rearrange in the presence of acid to give alpa -tertiary ketones. The trivial name of the simplest glycol of this type is pinacol, and this type of reaction therefore is named pinacol rearrangement (in this specific case, the reaction is called a pinacol-pinacolone rearrangement). The rearrangement involves 4 steps. one of the hydroxyl groups is protonated in the first step. A molecule of water is eliminated in the second step and a tertiary carbocation is formed. The carbocation rearranges in the third step into a more stable carboxonium ion via a [1,2] rearrangement. In the last step, the carboxonium ion is deprotonated and the product ketone is obtained.

Di-tert-glycols rearrange in the presence of acid to give alpa -tertiary ketones. The trivial name of the simplest glycol of this type is pinacol, and this type of reaction therefore is named pinacol rearrangement (in this specific case, the reaction is called a pinacol-pinacolone rearrangement). The rearrangement involves 4 steps. one of the hydroxyl groups is protonated in the first step. A molecule of water is eliminated in the second step and a tertiary carbocation is formed. The carbocation rearranges in the third step into a more stable carboxonium ion via a [1,2] rearrangement. In the last step, the carboxonium ion is deprotonated and the product ketone is obtained. What is R.D.S. of pinacol-pinacolone rearrangement?

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TRUEMAN BIOLOGY-(AIPMT(NEET Phase-1)-2016)(Conducted by CBSE on 01-05-2016)(Solved Paper)-MCQs
  1. In a testcross involving F(1) dihybrid flies, more parental-type offsp...

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  2. Water soluble pigments found in plant cell vacuoles are

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  3. Which of the following pairs of hormones are not antagonistic (having ...

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  4. Mitochondria and chloplast are (i) Semi-autonomous organelles ...

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  5. Which of the following is not a feature of the plasmids?

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  6. A plant in your garden avoids photorespiratory losses, has improved wa...

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  7. Emerson's enhancement effect and Red drop have been instrumental in th...

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  8. Which type of tissue correctly matches with its location ?

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  9. When does the growth rate of a population following the logistic model...

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  10. Which one of the following statements is not true?

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  11. Which one of the following statements is wrong

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  12. The Avena curvature is used for bioassay of

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  13. Which of the following structures is homologus to the wing of a bird?

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  14. Blood pressure in the pulmonary artery is

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  15. Fertilization in humans is practically feasible only if

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  16. In meiosis crossing over is initiated at

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  17. Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are include...

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  18. Lack of relaxation between successive stimuli in sustained muscle cont...

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  19. Identify the correct statement on 'inhibin'

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  20. Name the chronic respiratory disroder caused maninly by cigarette smok...

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