What is the difference between prophase and prophase II?
The main difference between prophase 1 and 2 is that genetic recombination occurs through crossing overs and the “Chiasmata” formation during prophase 1 whereas no genetic recombination is noticed at the prophase 2.
What happens in prophase 11 of meiosis?
During prophase II, chromosomes condense and the nuclear envelope breaks down, if needed. The centrosomes move apart, the spindle forms between them, and the spindle microtubules begin to capture chromosomes.
What is the difference between prophase 1 and prophase 11?
Prophase I occurs after interphase while prophase II occurs after telophase I. This is another difference between prophase I and prophase II. Furthermore, during the prophase I, homologous chromosomes pair up and form tetrads and exchange genetic materials between each other. But this is not happening in prophase II.
What is a characteristic seen in prophase 1 that does not occur in prophase 2?
C) During prophase I the chromosomes coil up; the chromosomes are not coiled up during prophase II.
Which is the most important difference between prophase in mitosis and prophase1 prophase of meiosis1 )?
Answer. The homologous chromosomes pair together in prophase 1 of meiosis, but they do not during prophase 1 of mitosis. This is achieved by a process known as synapsis, where the similar chromosomes pair according to sequence similarity.
What process happens before prophase I of meiosis but not prophase II?
Explanation: Meiosis is reductional division. Preparation starts in prophase I where genetic recombination takes place through crossing over, i.e. exchange of chromosomal parts between homologous chromosomes. For this they come together due to formation of synaptonemal complex .
What happens in prophase I which does not occur prophase II?
D) In prophase I the sister chromatids are attached; in prophase II the sister chromatids are separated. A) During prophase I there is one diploid cell; during prophase II there are two haploid cells.
Which event or events occur in the prophase II phase of meiosis II?
During prophase II of meiosis II, four important steps occur. These are the condensing of chromatin into chromosomes, disintegration of the nuclear envelope, migration of centrosomes to either pole, and the reconstruction of the spindle apparatus. However, centrosomes are not present in all cells.
What happens in meiosis II prophase II?
Definition. During prophase II of meiosis II, four important steps occur. These are the condensing of chromatin into chromosomes, disintegration of the nuclear envelope, migration of centrosomes to either pole, and the reconstruction of the spindle apparatus.