Multiple Choice QuestionsAssertion : Clones are a group of organisms of identical genotype, produced by a single parent through asexual means.
Reason : Clones exhibit high genetic variations.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both the assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both the assertion and reason are false.
C.
If assertion is true but reason is false
A clone can be defined as an individual organism that was grown from a single body cell of its parent and that is genetically identical to it. Plants that are able to propagate by asexual means produce genetically identical plants that are clones. Many unicellular organisms, such as bacteria and yeasts, are clones of parent cells generated by either binary fission or budding. The body cells of plants and animals are clones ultimately derived from the mitosis (cell reproduction) of a single fertilized egg. More narrowly, a clone can be defined as an individual organism that was grown from a single body cell of its parent and that is genetically identical to it.
Assertion : Plasmids are double stranded extrachromosomal DNA.
Reason : Plasmids are possessed by eukaryotic cells.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both the assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false.
If both the assertion and reason are false.
Assertion : The mRNA attaches itself to the ribosome via its 3' end.
Reason : The mRNA has F-capsular nucleotide and bases of lagging sequence.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both the assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both the assertion and reason are false.
Extranuclear genes occurs in
plastids and are not inherited
plasmid and are not inherited
mitochondria and are inherited by female
mitochondria and are inherited by male
Assertion : Watson and Crick provided experimental proof of semiconservative nature of DNA replication.
Reason : DNA polymerase binds nucleotides in replication.
If both Assertion and Reason are true and Reason is the correct explantion of Assertion
If both Assertion and Reason are true and Reason is not the correct explanation of Assertion
If Assertion is true but Reason is false
If Assertion is false but Reason is true.
Match the following and choose the correct combination from the options given.
| Column I (Chemical compounds) | Column II (Example) |
| A. Nitrogen base | 1. RNA |
| B. Nucleoside | 2. Thymidylic acid |
| C. Nucleotide | 3. Cytidine |
| D. Nucleic acid | 4. Uracil |
A - 1; B - 2; C - 3; D - 4
A - 1; B - 3; C - 2; D - 4
A - 4; B - 3; C - 2; D - 1
A - 4; B - 1; C - 2; D - 3
A - 4; B - 1; C - 2; D - 3
In eukaryotic genes, coding sequences are called
introns
exons
regulatory sequence
repetitive DNA
repetitive DNA
Which site of the tRNA pairs through hydrogen bonding with the triplet codes on mRNA?
Codon
5' end of tRNA
3' end of tRNA
Anticodon
Anticodon
Find the wrongly matched pair
Har Gobind Khorana - synthesized RNA molecules chemically
George Gamow - codon is triplet's
Meselson and Stahl - regulation of gene expression
Alec Jeffreys - DNA finger printing
Alec Jeffreys - DNA finger printing
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