CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Significance of Crossing Over

During, meios...

Question

During, meiosis-I, the bivalent chromosomes clearly appear as tetrads during:

A

Diakinesis

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

Diplotene

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Leptotene

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

Pachytene

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D
Explanation of the correct option
During pachytene of meiosis-I, the paired chromosomes of each bivalent condense and become more distinct.
Further, sister chromatids in each chromosome become distinct due to the appearance of a longitudinal furrow.
Thus, each bivalent clearly appears as a tetrad consisting of four chromatids.

Final Answer: During, meiosis-I, the bivalent chromosomes clearly appear as tetrads during pachytene.

Suggest Corrections

thumbs-up

4

Similar questions

Refer to the following statements describing Prophase I of meiosis and answer the question.
(i) Thin thread like chromosomes with a beaded appearance
(ii) Appearence of recombination nodules
(iii) Formation of bivalents/tetrads
(iv) Terminalisation of chiasmata
(v) Appearance of chiasmata
Arrange the given statements in the correct sequence of their occurrence during prophase I.

Q. The complex formed by a pair of synapsed homologous chromosomes is called :Homologous chromosome are paired and synapsed during zygotene stage of meiosis-I and known as bivalent

Q. Choose the correct answers from the alternatives given :
During prophase I of meiosis homologous chromosomes pair with each other to form bivalents A bivalent is an association of

Q. Tetrads are formed, during .......... phase of meiosis.

Refer to the following statements describing Prophase I of meiosis and answer the question.
(i) Thin thread like chromosomes with a beaded appearance
(ii) Appearence of recombination nodules
(iii) Formation of bivalents/tetrads
(iv) Terminalisation of chiasmata
(v) Appearance of chiasmata
Identify the different stages with respect to the above given features and select the correct option

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Linkage and Crossing Over

BIOLOGY

Watch in App

explore_more_icon

Explore more

Significance of Crossing Over

Standard XII Biology

Join BYJU'S Learning Program

CrossIcon