Why do chromosomes line up in the center of the cell?
The sister chromatids line up at the equator, or center, of the cell. This is also known as the metaphase plate. The spindle fibers ensure that sister chromatids will separate and go to different daughter cells when the cell divides.
What phase of mitosis are chromosomes not visible?
During interphase, individual chromosomes are not visible, and the chromatin appears diffuse and unorganized.
What happens to the chromosomes in mitosis to make them visible?
The replicated chromosomes ‘condense’. Their DNA becomes tightly coiled up and the replicated chromosomes become visible as separate units. The chromosomes shorten and thicken and can now be seen as pairs of chromatids .
Why do daughter cells have to be identical to parent cells?
In mitosis a cell divides to form two identical daughter cells. It is important that the daughter cells have a copy of every chromosome, so the process involves copying the chromosomes first and then carefully separating the copies to give each new cell a full set. Before mitosis, the chromosomes are copied.
Why are the two daughter cells genetically identical?
Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell. These new combinations result from the exchange of DNA between paired chromosomes. Such exchange means that the gametes produced through meiosis exhibit an amazing range of genetic variation.
What is an example of daughter cell?
At the end of the division process, duplicated chromosomes are divided equally between two cells. These daughter cells are genetically identical diploid cells that have the same chromosome number and chromosome type. Somatic cells are examples of cells that divide by mitosis.
What is another name for the daughter cells?
After the fusion of two gametes, the zygote contains all the necessary genetic material for an entire organism, bundled into a single cell. This single parent cell is completely unspecified. The daughter cells it creates will also be very generalized. These cells are known as stem-cells.
Why is it called daughter cells?
Answer: So naturally organisms/cells capable of producing offspring are also given a feminine trait. The parent cell is often called the mother cell, and the daughter cells are so named because they eventually become mother cell themselves.
What is a single strand of a chromosome called?
Well, DNA’s arranged in chromosomes, as you know, so what happens is, as a chromosome replicates, or makes a copy of itself, it’s arranged as two chromosomes next to each other, called chromatids. So a chromatid is one copy of a chromosome after DNA replication.