– The anaphase stage of cell division occurs when replicated chromosomes are split and the newly- copied chromosomes (daughter chromatids) are pulled to the opposite poles by the spindle fibers of the cell. So, the correct answer is ‘V-shaped’.
What happens to chromosomes during anaphase 1?
Anaphase I: In anaphase I, the attachment of the spindle fibers is complete. The homologous chromosomes are pulled apart and move towards opposite ends of the cell. Do not confuse this with the pulling apart of sister chromatids! This is the point in which reduction occurs with 23 chromosomes moving to each pole.
Which is the shape of chromosome?
Chromosomes have generally three different shapes, viz., rod shape, J shape and V shape. These shapes are observed when the centromere occupies terminal, sub terminal and median position on the chromosomes respectively. Chromosome size is measured with the help of micrometer at mitotic metaphase.
What is J shaped chromosome?
The chromatids moving towards opposite poles appear to be of various shapes like V-shaped (metacentric chromosomes), J-shaped (submetacentric chromosomes) or I-shaped (telocentric chromosomes), depending on the position of the centromere. So, the correct answer is option D.
What type of chromosomes are being separated in anaphase 1?
In anaphase I, the homologous chromosomes are separated. In prometaphase II, microtubules attach to the kinetochores of sister chromatids, and the sister chromatids are arranged at the midpoint of the cells in metaphase II.
What is anaphase2?
Anaphase II: The chromatids split at the centromere and migrate along the spindle fibers to opposite poles. Telophase II: The cells pinch in the center and divide again. The final outcome is four cells, each with half of the genetic material found in the original. In the case of males, each cell becomes a sperm.
What is anaphase in cell cycle?
Anaphase is the fourth phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. … The separated chromosomes are then pulled by the spindle to opposite poles of the cell.
What is the shape of chromosome give its names in the figure?
i) Telocentric chromosomes: Rod-like and have a centromere situated on the proximal end. ii) Acrocentric chromosomes: Rod-like and have a small, or even imperceptible, arm.
What is the shape of Submetacentric chromosome?
The shape of submetacentric chromosome is “L”, of which the length of p arms and q arms are unequal. The metacentric chromosomes are X-shaped, with the centromere in the middle so that the two arms of the chromosomes are almost equal. Human chromosomes 1, 3, 16, 19, and 20 are metacentric.
What is the name of L shaped chromosome?
So, the correct answer is Sub-metacentric i.e option (d).
What shape would a Metacentric and Submetacentric?
Metacentric chromosomes produce V-shaped daughter chromosomes, submetacentric appear J-shaped and acrocentric form I-shapes. When creating karyotypes, the position of the centromere is used to find matching pairs, as it can be very specific.
How do you identify anaphase?
Anaphase usually only lasts a few moments and appears dramatic. This is the phase of mitosis during which the sister chromatids separate completely and move to opposite sides of the cell. If you view early anaphase using a microscope, you will see the chromosomes clearly separating into two groups.
How does anaphase 1 in meiosis differ from anaphase in 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.
What happens during anaphase 1 and 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.