Multiple Choice QuestionsExtranuclear 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
Radio-tracer technique shows that DNA is in
single-helix stage
double-helix stage
multi-helix stage
none of these
Assertion : 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.
A point mutation comprising the substitution of a purine by pyrimidine is called
transition
translocation
deletion
transversion
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.
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.
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