what are the basic differences between the phases of mitosis nad miosis?
Mitosis | Meiosis |
Paring of chromosomes does not occur. | Pairing of homologous chromosomes takes place. |
Crossing over is absent. | Crossing over occurs between non-sister chromatids of homologous chromosomes. |
It is of short duration. | Prophase I is of longer duration while prophase II is very brief. |
Prophase is not distinguishable into substages. | Prophase I is divided into substages. Prophase II is simple. |
Mitois | Meiosis |
Chromosomes are independent and do not show connection. | Homologous chromosomes are interconnected. |
A centromere is connected with both the spindle poles. | A centromere is connected to one spindle pole in metaphase I but both in metaphase II. |
Two chromatids of a chromosome are genetically similar. | The two chromatids of a chromosome are genetically different due to crossing over. |
Mitosis | Meiosis |
A centromere splits lengthwise to form two centromeres in the beginning of anaphase. | Centromeres do not divide during anaphase I but do so in anaphase II. |
Anaphasic chromosomes are single stranded. | Chromosomes are double stranded in anaphase I but single stranded in anaphase II. |
Similar chromosomes move towards the opposite poles in anaphase. | Dissimilar chromosomes move towards the opposite poles both in anaphase I and anaphase II. |
Mitosis | Meiosis |
Telophase is longer and produces interphase nuclei. | Telophase I is shorter and nuclei never enters the interphase. |