1. Why is it necessary to reduce the chromosome number of gametes, but not other

Question

1. Why is it necessary to reduce the chromosome number of gametes, but not other cells of an organism?

2. If humans have 46 chromosomes in each of their body cells, determine how many chromosomes you would expect to find in the following:

Sperm _______________
Egg _________________
Daughter cell from mitosis __________
Daughter cell from Meiosis II __________

3. Use the space below to describe the major events that take place in each stage. Include in this the number of chromosomes present at each stage.

Meiosis I
Prophase I—


Metaphase I—


Anaphase I—

Telophase I—

Explanation / Answer

1. Why is it necessary to reduce the chromosome number of gametes, but not other cells of an organism?
meiosis ---------for gamtogenesis--FOR HAPLOID gametes

to MAINTAIN CONSTANT NUMBER DIPLOID NUMBER FOR A SPECIES
2. If humans have 46 chromosomes in each of their body cells, determine how many chromosomes you would expect to find in the following:

Sperm _-------------23
Egg _------------23
Daughter cell from mitosis -------46
Daughter cell from Meiosis II------------- 23

3. Use the space below to describe the major events that take place in each stage. Include in this the number of chromosomes present at each stage.

Meiosis I

Prophase I—shortening and Pairing of homologous chromosomes -46


Metaphase I—arrangemnet of chromosomes at midline of cell-46


Anaphase I—separation of bivalenet and tetrads -------towards to poles-------92

Telophase I—separation of homologous chromosomes-46

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