Which two statements are true for the leading strand in dna? it is synthesized toward the replication fork. it is synthesized in the 3′ to 5′ direction. it is synthesized away from the replication fork. it is synthesized in the 5′ to 3′ direction.

The correct options are statement first and fourth that is -

It is synthesized toward the replication fork and it is synthesized in the 5′ to 3′ direction.

Leading strand in DNA is the strand of new DNA being synthesized in the same direction where the replication fork is moving. The movement of replication fork allows the access of template for the new DNA.

The DNA synthesis is continuous in the leading strand. It is synthesized in the 5' to 3' as DNA synthesis always takes place in this direction. This is because dNTP ( deoxyribonucleoside triphosphate) provides free 3' OH group where new dNTP can be added by the enzyme DNA polymerase.

The correct answer is option A and D, It is synthesized toward the replication fork and It is synthesized toward the replication fork.

Reason -

A leading stand of DNA is synthesized in the direction same as that of the replication fork movement. Since the replication moves in the 5’-3’direction, the leading strand of DNA is also synthesized in the 5’-3’direction. This strand is a continuous strand and it has no breaks in it. The nucleotides are continuously added to the 3’ end of the strand.  

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interphase

the period of cell growth when the cell synthesizes new molecules and organelles. the cell is not dividing and it constitutes the majority of the time spent in the cell cycle

prophase

changes occur in the nucleus and cytoplasm. the chromatin condenses to form structures (sister chromatids) visible with a light microscope and the mitotic spindle begins to form, but the nucleus is still in tact

prometaphase

the nuclear envelope fragments and the spindle microtubules attach to the kinetochores of the sister chromatids

metaphase

all the cell's duplicated chromosomes are lined up at an imaginary plane equidistant between the poles of the mitotic spindle

anaphase

begins when sister chromatids separate from each other and ending when a complete set of daughter chromosomes arrives at each of the two poles of the cell

telophase

the daughter nuclei form at the two poles of a cell

cytokinesis

the division of a cytoplasm to form two separate daughter cells. usually occurs during telophase during mitosis. this and mitosis make up to mitotic (m) phase of the cell cycle