Meiosis: Formation of Gametes

20 Questions

What occurs during the leptotene stage of meiosis?

Chromosomes condense and become shorter

What is the function of the synaptonemal complex during meiosis?

Forms between homologous chromosomes

When does crossing-over occur during meiosis?

Pachytene

What is the result of the first meiotic division?

Production of 4 haploid cells

What happens in the second meiotic division?

Longitudinal division of the doubled chromosomes

What happens during diakinesis in meiosis?

Homologous pairs start to move to the equator

What is the role of the synaptonemal complex in meiosis?

Facilitates crossing-over

What happens during pachytene in meiosis?

Synapsis of homologous chromosomes

What is observed in diplotene during meiosis?

Synaptonemal complex slowly disappears

What happens after the first meiotic division?

Rest known as interkinesis or interphase II

What is the result of random assortment of homologous chromosomes during meiosis?

Numbers of different types of cells generate with different gene collection

What is the key feature of the second meiotic division?

Segregation of chromatids into gametes randomly

What is the outcome of meiosis?

4 genetically unique haploid cells

When does replication of genetic material occur in meiosis?

Before meiosis I only

What are the two meiotic divisions in meiosis called?

Meiosis I and meiosis II

Which phase of meiosis involves the tightly bound sister chromatids moving towards opposite poles of the cell?

First anaphase

What is the chromosome number in each daughter cell formed by meiosis?

Half the diploid number

Which phase marks the beginning of crossing over and recombination of genetic material in meiosis?

Leptotene

What is the result of the second meiotic division?

Formation of haploid cells from diploid cells

At what stage do homologous chromosomes pair up and exchange genetic material?