1
IAT (IISER) 2025
MCQ (Single Correct Answer)
+4
-1

Which amino acid will be charged on the tRNA with anticodon $5^{\prime}$-GUU- $3^{\prime}$ ?

A

Asparagine (codon AAC)

B

Valine (codon GUU)

C

Leucine (codon UUG)

D

Glutamine (codon CAA)

2
IAT (IISER) 2025
MCQ (Single Correct Answer)
+4
-1

Two double heterozygous plants ( PpQq ), derived from two different pairs of true-breeding parents of unknown genotype, produce gametes in the proportions as given below.

IAT (IISER) 2025 Biology - Principles of Inheritance and Variation Question 1 EnglishWhich one of the following options correctly represents the genotype of the parents?

A

$$ \mathrm{R} 1=\mathrm{ppQQ} ; \mathrm{R} 2=\mathrm{PPqq} ; \mathrm{R} 3=\mathrm{PPQQ} ; \mathrm{R} 4=\mathrm{ppqq} $$

B

$$ \mathrm{R} 1=\mathrm{PPQQ} ; \mathrm{R} 2=\mathrm{ppqq} ; \mathrm{R} 3=\mathrm{ppQQ} ; \mathrm{R} 4=\mathrm{PPqq} $$

C

$$ \mathrm{R} 1=\mathrm{ppQQ} ; \mathrm{R} 2=\mathrm{PPqq} ; \mathrm{R} 3=\mathrm{PPqq} ; \mathrm{R} 4=\mathrm{ppQQ} $$

D

$$ \mathrm{R} 1=\mathrm{PPQQ} ; \mathrm{R} 2=\mathrm{ppqq} ; \mathrm{R} 3=\mathrm{ppqq} ; \mathrm{R} 4=\mathrm{PPQQ} $$

3
IAT (IISER) 2025
MCQ (Single Correct Answer)
+4
-1

What are retroviruses?

A

A group of viruses with RNA genome and no reverse transcriptase activity

B

A group of viruses with DNA genome and no reverse transcriptase activity

C

A group of viruses with DNA genome and reverse transcriptase activity

D

A group of viruses with RNA genome and reverse transcriptase activity

4
IAT (IISER) 2025
MCQ (Single Correct Answer)
+4
-1

The given picture was obtained from an agarose gel electrophoresis of a plasmid after digestion with restriction enzymes either $\mathrm{X}, \mathrm{Y}$ or both X and Y.

IAT (IISER) 2025 Biology - Biotechnology: Principles and Processes Question 1 EnglishWhich one of the following diagrams correctly represents the position of the restriction enzyme sites $(\mathrm{X}, \mathrm{Y})$ on the 10,000 bp plasmid?

A
IAT (IISER) 2025 Biology - Biotechnology: Principles and Processes Question 1 English Option 1
B
IAT (IISER) 2025 Biology - Biotechnology: Principles and Processes Question 1 English Option 2
C
IAT (IISER) 2025 Biology - Biotechnology: Principles and Processes Question 1 English Option 3
D
IAT (IISER) 2025 Biology - Biotechnology: Principles and Processes Question 1 English Option 4

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