Meiosis: Formation of Gametes

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What occurs during the leptotene stage of meiosis?

Synaptonemal complex slowly disappears

Chromosomes condense and become shorter (correct)

Homologous chromosomes pair along their entire lengths

Chiasmata move to the end of chromatids

What is the function of the synaptonemal complex during meiosis?

Forms between homologous chromosomes (correct)

Moves chromosomes to the equatorial plane

Causes chromosomes to decondense

Segregates the chromatids to opposite poles

When does crossing-over occur during meiosis?

Diakinesis

Pachytene (correct)

Diplotene

Leptotene

What is the result of the first meiotic division?

Production of 4 haploid cells Signup and view all the answers

What happens in the second meiotic division?

Longitudinal division of the doubled chromosomes Signup and view all the answers

What happens during diakinesis in meiosis?

Homologous pairs start to move to the equator Signup and view all the answers

What is the role of the synaptonemal complex in meiosis?

Facilitates crossing-over Signup and view all the answers

What happens during pachytene in meiosis?

Synapsis of homologous chromosomes Signup and view all the answers

What is observed in diplotene during meiosis?

Synaptonemal complex slowly disappears Signup and view all the answers

What happens after the first meiotic division?

Rest known as interkinesis or interphase II Signup and view all the answers

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

Numbers of different types of cells generate with different gene collection Signup and view all the answers

What is the key feature of the second meiotic division?

Segregation of chromatids into gametes randomly Signup and view all the answers

What is the outcome of meiosis?

4 genetically unique haploid cells Signup and view all the answers

When does replication of genetic material occur in meiosis?

Before meiosis I only Signup and view all the answers

What are the two meiotic divisions in meiosis called?

Meiosis I and meiosis II Signup and view all the answers

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

First anaphase Signup and view all the answers

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

Half the diploid number Signup and view all the answers

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

Leptotene Signup and view all the answers

What is the result of the second meiotic division?

Formation of haploid cells from diploid cells Signup and view all the answers

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

Pachytene Signup and view all the answers