Prophase 1 of Meiosis 1

Identify the phase of Prophase 1 of meiosis 1:

• Leptotene

• Zygotene

• Diplotene

• Diakinesis

Which of the following events occur during prophase 1 of meiosis 1?

• a) Chromosomes align at the equator of the cell
  

• b) Homologous chromosomes exchange genetic material
  

• c) Sister chromatids separate and move to opposite poles
  

• d) The nuclear envelope forms back

During prophase 1, what is the significance of homologous chromosomes pairing up?

• a) It allows for the exchange of genetic material between non-sister chromatids
  

• b) It ensures the proper alignment of chromosomes at the metaphase plate
  

• c) It promotes the separation of sister chromatids during anaphase 1
  

• 
  d) It prevents the formation of genetic abnormalitiesin offspring

Tags

NGSS.HS-LS3-2

Which of the following accurately describes the structure known as a chiasma?

• a) It is formed by the condensation of chromatin during prophase 1
  

• b) It represents the site where sister chromatids are held together after DNA replication
  

• c) It marks the point of contact between two non-sister chromatids during crossing over
  

• d) It facilitates the attachment of spindle fibers to the centromere during meiosis 1

5. What is the purpose of the synaptonemal complex during prophase 1?

• a) It ensures the proper alignment of chromosomes at the metaphase plate
  

• b) It facilitates the separation of sister chromatids
  

• c) It promotes the exchange of genetic material between homologous chromosomes
  

• d) It allows for the attachment of spindle fibers to the centromere during meiosis 1

How does prophase 1 of meiosis 1 differ from prophase of mitosis?

• a) Meiosis 1 has two rounds of cell division, while mitosis only has one
  

• b) Prophase 1 involves the pairing of homologous chromosomes, while mitosis does not
  

• c) Prophase 1 occurs in diploid cells, while mitosis occurs in haploid cells
  

• d) Meiosis 1 results in the formation of gametes, while mitosis produces identical daughter cells