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AlexFokin [52]
3 years ago
15

during which checkpoint would damaged or improperly replicated dna halt progression through the cell cycle?

Biology
2 answers:
Yuliya22 [10]3 years ago
5 0

Answer:

G2/Growth 2 phase

Juliette [100K]3 years ago
4 0

Answer:

When a cell's DNA is damaged, a sensor protein activates p53, which halts the cell cycle at the G 1start subscript, 1, end subscript checkpoint by triggering production of a cell-cycle inhibitor. This pause buys time for DNA repair, which also depends on p53, whose second job is to activate DNA repair enzymes.

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Under which conditions are the lac structural genes expressed most efficiently?
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Explanation:

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3 years ago
What will happen if the pollen tube pore its content inside the embryo sac?
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Answer:

Once the embryo sac has developed, pollination has occurred, and the pollen tube has grown into the ovary to make contact with the ovule, fertilization (fusion of egg and sperm) can occur.Typically, the pollen tube reaches the embryo sac via the micropyle (Greek, mikros + pyle = small opening), or opening, in the integuments of the ovule.. There, it discharges its sperm into the embry

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