Are the chromosomes single or double stranded at the end of mitosis?
Recall that DNA is replicated during the S phase of the cell cycle. Thus during metaphase of mitosis, each chromosome (i.e., each chromatid pair) will contain two molecules of double stranded DNA (one molecule per sister chromatid).
What stage of mitosis are the chromosomes double stranded?
Chromosomes are double stranded in Prophase and metaphase and single stranded in anaphase and telophase. Identical copies of a chromosome that are connected together at the centromere.
What splits at the end of mitosis?
Cytokinesis happens after mitosis. It is the final division to create two new cells. In this phase, the cytoplasm divides and two complete daughter cells are created. These two new cells have genetic information that is identical to the parent cell from which they originated.
Are the chromosomes at anaphase single stranded or double-stranded?
During anaphase each chromosome present in metaphase separates into two chromosomes, each with a single double-stranded DNA molecule. Therefore, during anaphase the chromosome number is temporarily doubled until the cells finish the process of cell division.
Are the chromosomes at prophase single or double-stranded?
Chromosomes appear as long coiled structures at the beginning of prophase and appear as single-stranded. Each chromosome is actually double-stranded due to duplication of genetic material during interphase that precedes mitosis.
What stage are chromosomes doubled quizlet?
Chromosomes are duplicated only during the S phase (“S” stands for synthesis of DNA) of interphase of the cell cycle.
What are the 4 stages of mitosis and what happens in each?
There are four stages of mitosis: prophase, metaphase, anaphase and telophase.1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres 2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell) 3) Anaphase: sister …
Are the two chromosomes in this diagram homologous?
1. Are the two chromosomes in this diagram homologous? Briefly explain your answer either way. No, they are clearly not homologous simply because they are not the same size.
Which cell has a single line of chromosomes?
Nearly all the cells in the human body carry two homologous, or similar, copies of each chromosome. The only exception is cells in the germ line, which go on to produce gametes, or egg and sperm cells. Germ line cells are haploid, which means they contain a single set of chromosomes.
Which of the following is the correct sequence of the phases of mitosis?
The correct order of mitotic phases is (C): Prophase – metaphase – anaphase – telophase.