Chromosomes are often observed and depicted as X-shaped structures. DNA takes this form following DNA replication during the process of cell division when the two replicated chromosomes ...

How are these unique sex chromosomes formed? "The sex of a somatic cell as highly differentiated as a neurone may be detected with no more elaborate equipment than a compound microscope following ...

Anaphase Chromosomes and their copies are pulled to different ends of the cell. Telophase New membranes form around the chromosomes at each end of the cell. Cytokinesis The cell membrane pinches ...

2. Three distinct spirems are formed in the primary endosperm nucleus. 3. A tripolar spindle, each arm with its group of chromosomes, precedes the formation of the bipolar spindle. 4. The three groups ...