Pachytene

Q.

What marks the final stage of meiotic prophase I?

Q. The enzyme recombinase is used at which stage of meiosis?

1. Pachytene of prophase I
2. Diplotene of prophase I
3. Zygotene of prophase I
4. Anaphase I

Q.

Define crossing over

Q. Crossing over takes place between which chromatids and in which stage of the cell cycle?

1. Non-sister chromatids of non-homologous chromosome at zygotene stage of prophase-I
2. Non-sister chromatids of homologous chromosome at pachytene stage of prophase-I
3. Non-sister chromatids of homologous chromosome at zygotene stage of prophase I
4. Non-sister cromatids of non-homologous chromosomes at pachytene stage of prophase I

Q.

Which stage of cell division is responsible for genetic variations and evolution of species?

1. Diplotene

2. Diakinesis

3. Pachytene

4. Anaphase II

Q.

Recombinase enzyme is involved during

1. diplotene

2. diakinesis

3. pachytene

4. zygotene

Q. Crossing over takes place in

1. zygotene
2. pachytene
3. diplotene
4. diakinesis

Q. The enzyme recombinase is used at which stage of meiosis?

1. Zygotene of prophase I
2. Anaphase I
3. Pachytene of prophase I
4. Diplotene of prophase I

Q.

How do genetic changes accumulate?

Q.

Consider the first image in green below and choose the option that corresponds to the stage that would follow it based on the images below.

1. 

2. 

3. 

4. 

Q. Statement I: Synapsis is the process of pairing of homologous chromosomes.
Statement II: Crossing over occurs between sister chromatids of homologous chromosomes.
Which of the above statements are correct?

1. Only I
2. Only II
3. Both I and II
4. Both the statements are wrong

Q.

During which stage of Prophase I, does the crossing over takes place ?

1. Pachytene

2. Leptotene

3. Zygotene

4. Diplotene