wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Which stage in prophase I of meiosis is characterised by the appearance of the recombination nodules?

A
Leptotene
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Zygotene
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Pachytene
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
Diplotene
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C Pachytene
During zygotene stage in prophase I of meiosis I, homologous chormosomes pair up to form a bivalent or tetrad. Bivalent refers to the 2 homologous chromosomes and tetrad refers to the 4 sister chromatids of the 2 homologous chromosomes.

After zygotene comes the pachytene stage. This stage is characterised by the appearence of recombination nodules at which crossing over occurs between non-sister chromatids of the homologous chromosomes.

flag
Suggest Corrections
thumbs-up
3
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Meiosis
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon