Chiasmata forms in which of these phases ?
Identify the stages of Prophase I, going from left to right, from the images below.
Zygotene, Pachytene, Diplotene, Diakinesis, Leptotene.
Pachytene, Diplotene, Diakinesis, Pachytene, Diplotene.
Diplotene, Diakinesis, Leptotene, Zygotene, Pachytene.
Leptotene, Zygotene, Pachytene, Diplotene, Diakinesis.
Which of the following occurs in meiosis but not in mitosis?
Separation of sister chromatids at anaphase
Pairing of homologous chromosomes at the metaphase plate
Attachment of spindle fibres to the kinetochores
Replication of DNA prior to the start of cell division
Which of the following is not a characteristic feature of mitosis in somatic cells?
Formation of spindle fibres
Disappearance of nucleolus
During synapsis the number of thread (Chromonemata) in each chromosome is:
Pairing of homologous chromosomes is called:
- two chromatids and one centromere
- two chromatids and two centromeres
- four chromatids and two centromeres
- four chromatids and four centromeres
- sister chromatids
- non-homologous chromosomes
- homologous chromosomes
- sister chromatids of non-homologous chromosomes