Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

molecular basis of inheritance

Multiple Choice Questions

121.

Balbiani rings are the structural features of

allosomes
polytene chromosomes
autosomes
lampbrush chromosomes

122.

Jumping genes in maize were discovered by

Hugo de Vries
Barbara McClintock
T H Morgan
Mendel

123.

DNA element with ability to change position is called

cistron
transposon
intron
recon

124.

Initiation codon is

125.

DNA mutiplication is called

translation
replication
transduction
transcription

126.
A eukaryotic gene contains two kinds of base sequences. Which of these plays an important role in protein synthesis?

Introns

Exons

Both (a) and (b)

None of these

Exons

In eukaryotic genes some non- coding parts are interspersed between coding parts. These non- coding parts are called introns and coding sequence are known as exons, ie, exons play an important role in protein synthesis.

127.

Repressor protein is produced by

regulator gene
operator gene
structural gene
promoter gene

128.

The back bone of RNA consists of which of the following sugar?

Deoxyribose
Ribose
Sucrose
Maltose

129.

Stop codons are

AUG, GUG
UAA, UGA, UAG
UAC, UGG
AGU, AGA, UAC

130.

Which of the following is not a Pyrimidine?

Thymine
Uracil
Guanine
Cytosine

Previous Year Papers

Test Series

Test Yourself

Multiple Choice Questions

126. A eukaryotic gene contains two kinds of base sequences. Which of these plays an important role in protein synthesis? Introns Exons Both (a) and (b) None of these

126.
A eukaryotic gene contains two kinds of base sequences. Which of these plays an important role in protein synthesis?

Introns

Exons

Both (a) and (b)

None of these