Question

Difference between prophase and prophase -1 short points

Answer 1

Prophase of mitosis

(i) It is a short phase and is not divided into any sub phase.

(ii) Pair formation in between homologous chromosomes does not occur as there is no attraction between than.

(iii) Chiasma is not formed.

(iv) Crossing over does not occur.

(v) Part exchange does not occur in the chromosome. So gene arranges not remains unchanged.



Prophase-1 of meioses

(i) It is a long phase and is divided into the sub phases.

(ii) Pair formation (synapsis) due to attraction occurs in between homologous chromosomes.

(iii) Chiasma is formed.

(iv) Crossing over occurs.

(v) Part exchange occurs, which changes the gene arrangement of the chromosomes.

Answer 2

Answer:

Mitosis's prophase

I It is a brief period that isn't broken up into any smaller ones.

(ii) There is no attraction between homologous chromosomes, therefore pair formation does not take place.

(iii) No chiasma forms.

(iv) There is no crossing across.

(v) The chromosome does not experience part exchange.

Gene arrangement is therefore not constant.

Meiosis prophase 1

I It is a lengthy phase that is broken up into smaller stages.

(ii) Pair formation (synapsis) between homologous chromosomes takes place as a result of attraction.

(iii) The chiasma forms.

(iv) Crossing over takes place.

(v) A part swap takes place, changing how the chromosomes' genes are organised.

#SPJ2