What happens in Whitefish anaphase?
In anaphase (F), a full set of daughter chromosomes move towards each pole. Ana is Greek for up, towards or apart, and in this case, refers to the moving apart. In telophase (G), the chromosomes have migrated to opposite poles, the cytoplasm starts to be divided at the equator by formation of the cell membrane.
What are the stages of mitosis in Whitefish?
Virtual Mitosis Lab: Part II – Whitefish Blastula Mitosis consists of 4 major stages: Prophase, Metaphase, Anaphase, and Telophase.
What stage of mitosis is indicated in the Whitefish Blastula slide?
prophase stage
Cell Division – Mitosis – in Whitefish Blastula Cells The arrows (A) in the photo point to a cell in the prophase stage of mitosis. During this stage the chromosomes become visible, the nucleoli disappear, the nuclear membrane is broken down and the spindle begins to take form.
What happens in the anaphase stage?
During anaphase, each pair of chromosomes is separated into two identical, independent chromosomes. The chromosomes are separated by a structure called the mitotic spindle. The separated chromosomes are then pulled by the spindle to opposite poles of the cell.
What is Whitefish blastula?
Whitefish blastula is the early stage of embryo development of whitefish. The blastula is formed after an egg is fertilized and divides numerous times…
Why are whitefish blastula used to study mitosis?
To study mitosis, biologists often look at particular cells. Two specimens are commonly used by biologists to study mitosis: the blastula of a whitefish and the root tip of an onion. The whitefish embryo is a good place to look at mitosis because these cells are rapidly dividing as the fish embryo is growing.
How much time do Whitefish blastula cells spend in interphase?
Question: Part 2: Studying the Cell Cycle in Whitefish Blastula Observations: It takes about 6 hours for whitefish blastula cells to complete the cell cycle.
What does the metaphase do?
Metaphase is the third phase of mitosis, the process that separates duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells.
What happens during anaphase apex?
What happens during Anaphase? The spindle fibers SPLIT APART the sister chromatids and move them to opposite ends of the cell, equally dividing the genetic material.
Is Whitefish a blastula?
Two specimens are commonly used by biologists to study mitosis: the blastula of a whitefish and the root tip of an onion. The whitefish embryo is a good place to look at mitosis because these cells are rapidly dividing as the fish embryo is growing. Mitosis can take several hours to complete.
What is a Whitefish metaphase?
Metaphase Whitefish Blastula Cell. Cell Division – Mitosis – in Whitefish Blastula Cells. This cell is in very late stage of metaphase. The chromosomes are attached to the microtubules of the spindle and they are lined up across the equator of the cell in a circle that is perpendicular to cell’s long axis.
What is a Whitefish blastula?
When do chromosomes separate in a whitefish blastula?
Anaphase begins as sister chromatids separate, drawn toward each centrosome by spindle fibers of the spindle apparatus. The process continues until late anaphase at which time the chromosomes have segregated to the poles in the eventual daughter cells. Whitefish blastula 1500x
What happens to a whitefish cell during mitosis?
So, for student purposes, whitefish blastula are used. Growth: the cell grows in size and carry out their normal day to day activities. Prior to mitosis, the cell readies itself by duplicating its chromosomes and other cellular contents. The chromosomes at this stage are dispersed and not visible using a light microscope.
How does the mitotic spindle work in anaphase?
During anaphase the mitotic spindle apparatus pulls the sister chromatids of each chromosome apart by attaching to each centromere and then pull the chromatids to each pole of the cell. Note that the telomeres of each chromosome point toward the cell’s equator.
What causes chromosomes to separate in an anaphase cell?
In the photograph the arrow points to a cell in anaphase. The cells sister chromatids (B), now individual chromosomes, have separated from one another. Their separation is caused by the removal of microtubular units at the polar ends of the fibers (A) to which the chromosomes are attached.