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DNA Structure and Replication

DNA Structure and Replication
An RNA primer is synthesized by

ligase
primase
DNA topoisomerase
DNA helicases

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DNA Structure and Replication
DNA with a G-C content of 50% will melt at approximately

90 °C
100 °C
70 °C
60°C

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DNA Structure and Replication
Deoxyribonucleoside triphosphates, being need in the chain termination methods are

all of these
dTTP
dATP
dGTP and dCTP

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DNA Structure and Replication
Which of the following species lack a 'classical' histone H1?

Saccharomyces cerevisiae
Strongylocentrotus purpuratus
Arabidopsis thaliana
Xenopus laevis

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DNA Structure and Replication
What is the name given to the points at which a DNA helix is unwound and new strands develop?

Leading strands
Replication origins
Okazaki fragments
Replication forks

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DNA Structure and Replication
In the study of one experiment it was found that the value of Tm for DNA is = 40° C. If the cell has 20% GC at the above Tm, then what will be value of 'Tm' if the GC% increases to 60%?

Decreases
Increases
Can not be compared
Remains same

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