In which phase of the cell cycle are chromosomes replicated? a. G1 phase b. S phase c. M phase d

step 1 Hello everyone. Today we'll be looking at a cell cycle question. So the main function of the cel

In which phase of the cell cycle are chromosomes replicated?...

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Cell Cycle

The cell cycle is the series of events that take place in a cell leading to its division and replication. It consists of distinct phases, including the growth phases, DNA replication phase, and the mitosis phase where the cell splits into two daughter cells. Understanding the cell cycle is crucial for studying cell biology, development, and diseases like cancer.

S Phase

The S phase, or synthesis phase, is the part of the cell cycle during which DNA replication occurs. This phase is essential because each chromosome is duplicated to ensure that both daughter cells receive an identical set of genetic information during cell division.

DNA Replication

DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule. This is a critical step in the cell cycle, ensuring that genetic information is accurately transferred from parent cell to daughter cell, maintaining the integrity of the genome.

Transcript

00:01 Hello everyone.

00:01 Today we'll be looking at a cell cycle question.

00:05 So the main function of the cell cycle is actually to make cells.

00:12 The cell cycle starts with one cell, which divides into two cells that are identical to each other and to the parent.

00:20 Now we typically use a pie -shaped diagram to represent all of the events necessary for us to go from one cell to two cells.

00:29 So everything that happens in between, again, can be detailed using a pie -shaped diagram with four sections, with four phases.

00:40 The first part of the cell cycle, so the first phase of the cell cycle is called the g1 phase.

00:46 The g stands for growth.

00:48 And during this time, the cell is born and grows to its normal size.

00:53 But before the cell can continue, it needs to stop at this checkpoint.

00:58 We call it the g1 checkpoint.

01:01 Here we make sure that the cell has reached its adequate size and we need to make sure that its dna is not damaged.

01:09 If the dna is damaged or if the cell hasn't reached its adequate size, then the cell will enter something called g0, which is the resting phase.

01:19 And here, the cell will either be fixed or destroyed depending on the severity of its damage.

01:26 If the cell is healthy, right size, no damage to the dna, then the cell can continue to the s phase...

Please give Ace some feedback