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DNA Replication › View

Which is the first step?

A. DNA Helicase unwinds original DNA strand

B. RNA Primase lays down RNA primer for new nucleotide bases.

C. DNA polymerase builds new strands by bring in new nucleotide bases.

D. Ligase knits together fragments on lagging strand

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Reproduction › View

What is IVF?

A. Sperm is directly inserted into the uterus.

B. The egg cell is fertilised outside the body and then implanted back into the uterus.

C. A hormone.

D. When sperm is inserted into the vagina.

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