MCQ
Chiasma shows the sites of
- ASpindle formation
- BSynapsis
- ✓Crossing over
- DNone of these
✓
Answer
Correct option: C.
Crossing over
c
Chiasma is an attachment of two non-sister chromatids in a bivalent in diplotene stage of prophase$-I$ of meiosis. Each chiasma results in the exchange of genetic material between non-sister chromatids, i.e., crossing over.
Chiasma is an attachment of two non-sister chromatids in a bivalent in diplotene stage of prophase$-I$ of meiosis. Each chiasma results in the exchange of genetic material between non-sister chromatids, i.e., crossing over.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
$6-$ furfuryl adenine is
→Blood of Pheretima is:
Identify the correct statements w.r.t. the given cell
→$A$. Concerned with lipid and steroidal hormone synthesis
$B$. Outer non-living rigid structure which gives shape to the cell and protects from mechanical damage and infection.
$C$. Both lie perpendicular to each other and each has an organisation like the cart wheel.
$D$. Responsible for trapping light energy for the synthesis of sugar.
$E$. Present in cells actively involved in protein synthesis and secretion.
$F$. Spherical structures, rich in hydrolytic enzymes.
Match the stages of meiosis in column I to their characteristic features in column II and select the correct option using the codes given below.
→| Column $-I$ | Column $-II$ |
| $(A)$ Pachytene | $(i)$ Pairing of homologous chromosomes |
| $(B)$ Metaphase$-I$ | $(ii)$ Terminalisation ofchiasmata |
| $(C)$ Diakinesis | $(iii)$ Crossing-over takes place |
| $(D)$ Zygotene | $(iv)$ Chromosomes align at equatorial plate |
Which is the correct sequence of mitotic cell division?
Feedback inhibition of an enzymatic reaction is caused by:
Rice, cereals, monocots and plants represent
Maximum amount of energy/$ATP$ is liberated on oxidation of
→Ion carriers are located in
Heartwood differs from sapwood in