MEIOSIS REVIEW

Gametes

________ are sex cells.

Haploid

Are your sex cells diploid or haploid?

Haploid

Are daughter cells produced at the end of meiosis II

considered diploid or haploid?

Genetically DIFFERENT!

What is the genetic relationship of daughter cells

to each other in meiosis?

4

How many daughter cells are produced at the end

of meiosis?

Egg cell

_______ is the female gamete.

Homologous chromosomes

___________ are the paired chromosomes that have genes for the same traits arranged in

the same order.

Fertilization

_________ is the process of joining gametes.

XY

What are the male sex chromosomes?

46

How many chromosomes do you have in your skin

cells?

Diploid

____________ is a cell containing 2 sets of

chromosomes.

NO!A dog has 78 chromosomes and is less complex than humans

Is the number of chromosomes related to the complexity of an

organism? WHY?

Meiosis

_______ is a two stage type of cell division that creates gametes.

23

At the end of meiosis II, how many (human) chromosomes

does each daughter cell have?

1

How many cell divisions occur in MITOSIS?

Diploid

Are the daughter cells produced at the end of MITOSIS

considered haploid or diploid?

46

What is the diploid number in humans?

Somatic cells

__________ are all cells other than egg or sperm cells.

23

How many chromosomes do you have in your egg

or sperm cells?

Genetically the SAME!

What is the genetic relationship of daughter cells

to each other in MITOSIS?

zygote

________ is the cell that is created when a sperm

fertilizes an egg.

XX

What are the female sex chromosomes?

Genetically DIFFERENT!

What is the genetic relationship of daughter cells

to parent cell in meiosis?

Haploid

_________ is a cell with only ONE set of chromosomes.

1. creates haploid gametes2. provides genetic variation

Why is meiosis significant? (2 reasons)

23

How many chromosomes do you get from your

mom?

Prophase I

During what stage of meiosis does crossing

over occur?

2

How many cell divisions occur in meiosis?

Crossing over

__________ occurs when nonsister chromatids of

homologous chromosome exchange genetic information.

sperm

______ is the male gamete.

Genetically the SAME!

What is the genetic relationship of daughter cells

to parent cell in MITOSIS?

46

At the end of meiosis I, how many (human) chromosomes

does each daughter cell have?

1. Crossing over – random swapping of DNA

2. Independent assortment of the homologous chromosomes – it is random to which side of the cell the chromosomes move to (223)

EXPLAIN how meiosis provides genetic

variation? (2 ways)

2

How many daughter cells are produced from

MITOSIS?

23

What is the haploid number in humans?

Diploid

Are your somatic cells diploid or haploid?