AIIMS Botany Class 12 Questions

Chimeric DNA is

Which two are nucleotides :

Gene library or DNA library has collection of

Which of the following are homosporous

Identify a, b, and c

124. Match the column I and II

Genes on same chromosome can be

Select the correct option regarding genetic code of Glycine

Which is similar term to Hybrid vigour?

Who discovered DNA fingerprinting

Which of the following switch off lac operon

Match the following:

m-RNA is formed by

Percentage of (G + C) is

The process of removal of anther from the flower bud before it dehisces is called as

Arrange them on the basis of increasing size:

Which of the following is a sex linked character

Select the correct option w.r.t. Age pyramids.

The genetic code of proline are :

Select the correct match | (I) | (II) | (III) | | :--- | :--- | :--- | | (a) + | (i) - | (P) Amensalism | | (b) - | (ii) - | (Q) Commensalism | | (c) - | (iii) 0 | (R) Predation | | (d) + | (iv) 0 | (S) Competition |

Select the correct match (I) (II) (III) (a) + (i) – (P) Amensalism (b) – (ii) – (Q) Commensalism (c) – (iii) 0 (R) Predation (d) + (iv) 0 (S) Competition

135. Match the column-I and column-II

The coding strand of DNA is : 5′AATTCAAATTAGG₃′ What is the sequence of mRNA?

The genetic codes of arginine are:

Correct sequence for Alanine code:

Match the following:

Identify a, b and c

Which mutation causes change in allele?

DNA polymerase links nucleotide by forming which type of bond:

Which is not possible by mutation:

Select the wrong statement:

Match the Column-I with II

Assertion: Down syndrome, Klinfelter syndrome and Turner syndrome are chromosomal disorders. Reason: In Klinfelter syndrome females are sterile.

Choose the correct statement.

Assertion : In eukaryotes, both intron and exon are transcribed to form hnRNA Reason : Splicing is required in prokaryotes

Match the correct column

Assertion: Parthenocarpy involves formation of seedless fruit. Reason: Apomixis occurs without fertilization

Assertion : Heterospory and retention of female gametophyte are responsible for origin of seed habit in Selaginella Reason: Psilotum is a living fossil

Identify the parts labeled in the diagram.

Assertion: In eukaryotes, transcription occurs in nucleus Reason: In bacteria, transcription and translation occurs in cytoplasm.

Amylopectin is

Which statement is correct for apomixes?

Assertion: Fig and wasp cannot complete their life cycle without each other. Reason: It is mutualistic relationship.

Polysaccharides can be tested by

Choose the correct option

Assertion: In commensalism, one organism is benefitted and other is unaffected Reason: Cattle egret bird and cattle is an example of commensalism

Which of the following are all Nucleotides

Protein on reaction with which yields Ruhemann's purple?

Match the column

Choose the correct statement