In anaphase, the sister chromatids separate from each other and are pulled towards opposite ends of the cell. The protein “glue” that holds the sister chromatids together is broken down, allowing them to separate. Each is now its own chromosome. The chromosomes of each pair are pulled towards opposite ends of the cell.
What is the unique feature observed in anaphase?
In late anaphase, a furrow begins to appear in the cell membrane at the middle of an animal dividing the cytoplasm into two parts.
What are the main characteristics of anaphase I?
In anaphase I, the homologues are pulled apart and move apart to opposite ends of the cell. The sister chromatids of each chromosome, however, remain attached to one another and don’t come apart. Finally, in telophase I, the chromosomes arrive at opposite poles of the cell.
What is the best description of the anaphase?
Anaphase (from Ancient Greek ἀνα- (ana-) ‘back, backward’, and φάσις (phásis) ‘appearance’), is the stage of mitosis after the process of metaphase, when replicated chromosomes are split and the newly-copied chromosomes (daughter chromatids) are moved to opposite poles of the cell.
What is the most distinguishing feature of metaphase?
Metaphase is one of the stages of mitosis. During this stage, the chromosomes align in a specific manner that is very distinguishable from all of the other stages in mitosis.
What is the unique feature observed in this stage metaphase?
Metaphase is a stage during the process of cell division (mitosis or meiosis). Usually, individual chromosomes cannot be observed in the cell nucleus. However, during metaphase of mitosis or meiosis the chromosomes condense and become distinguishable as they align in the center of the dividing cell.
What is a difference between anaphase 1 of meiosis and anaphase of mitosis?
In anaphase 1 in meiosis, homologous pairs are separated but sister chromatids stay joined together. In anaphase 1 of mitosis the sister chromatids do separate.
How would you differentiate between a cell in anaphase of mitosis anaphase I and anaphase II?
The key difference between anaphase I and anaphase II is that during the anaphase I, complete chromosomes go towards each pole while during the anaphase II, sister chromatids go towards each pole. Anaphase I occurs during meiosis I while the anaphase II occurs during meiosis II.
What is the primary functional difference between mitotic anaphase and meiotic anaphase 2?
Generally, anaphase I involve separating the chromosomes from each sister chromatid to the opposite poles still attached to the microtubules of the cell while anaphase 2 involves the actual split of the sister chromatids into single chromatids.
What distinguishes prophase I of meiosis from prophase of mitosis?
In mitosis, prophase, metaphase, anaphase and telophase occur once. Chromosomes condense and the centrosomes begin to form an early spindle. Meiotic prophase I is much longer that mitotic prophase. During prophase I homologous chromosomes make contacts with each other called chiasmata and “crossing over” occurs.
How does cytokinesis differ in plant and animal cells?
The key difference between plant and animal cytokinesis is that in plant cells, cytokinesis occurs through the formation of a cell plate while in animal cells cytokinesis occurs through the formation of a cleavage furrow.
Which phase of the mitosis do you think would vary the most due to different rates of cell division and why?
Interphase. G1 is the phase following mitosis and preceding the synthesis phase. It is the most variable part of the cell cycle – lasting at least one hour and over 100 hours in some dividing cells.
Why is anaphase important and unique in terms of chromosome number?
Anaphase is a very important stage of cell division. It ensures that duplicated chromosomes, or sister chromatids, separate into two equal sets. … If chromosomes fail to separate properly during anaphase, nondisjunction has occurred. It results in cells with abnormal numbers of chromosomes.
What are the features of metaphase?
The key features of metaphase are spindle fibres atach to kinetochores of chromosomes and chromosome are moved to spindle equator and get aligned along metaphase plate.
What difference can you see when you compare the nucleus of a dividing cell with that of a non dividing cell?
What differences can you see when you compare the nucleus of a dividing cell with that of a non-dividing cell? chromosomes will be seen in the nucleus of the dividing cell because they are visible when a cell is dividing apposed to non-dividing cells.
What is mitosis describe various stages of mitosis?
Mitosis has four stages: prophase, metaphase, anaphase, and telophase. Encyclopædia Britannica, Inc. mitosis, a process of cell duplication, or reproduction, during which one cell gives rise to two genetically identical daughter cells.