Meiosis Review

________ are sex cells. Gametes

The daughter cells produced at the end of meiosis II are considered- diploid or haploid?

What is the genetic relationship of daughter cells to each other in meiosis? Genetically DIFFERENT!

How many daughter cells are produced from meiosis? 4

_______ is the female gamete. Egg cell

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

_________ is the process of joining gametes. Fertilization

What are the male sex chromosomes? XY

How many chromosomes do you have in your skin cells? 46

____________ is a cell containing 2 sets of chromosomes. Diploid

Is the number of chromosomes related to the complexity of an organism Is the number of chromosomes related to the complexity of an organism? WHY? NO! A dog has 78 chromosomes and is less complex than humans

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

At the end of meiosis II, how many (human) chromosomes does each daughter cell have? 23

How many cell divisions occur in MITOSIS? 1

The daughter cells produced at the end of MITOSIS are considered- haploid or diploid?

What is the diploid number in humans? 46

__________ are all cells other than egg or sperm cells. Somatic cells

How many chromosomes do you have in your egg or sperm cells? 23

What is the genetic relationship of daughter cells to each other in MITOSIS? Genetically the SAME!

________ is the cell that is created when a sperm fertilizes an egg. zygote

What are the female sex chromosomes? XX

What is the genetic relationship of daughter cells to parent cell in meiosis? Genetically DIFFERENT!

_________ is a cell with only ONE set of chromosomes. Haploid

Why is meiosis significant? (2 reasons) 1. creates haploid gametes 2. provides genetic variation

How many chromosomes do you get from your mom? 23 Homologous Chromosomes

During what stage of meiosis does crossing over occur? Prophase I

How many cell divisions occur in meiosis? 2

__________ occurs when nonsister chromatids of homologous chromosome exchange genetic information. Crossing over

What is the genetic relationship of daughter cells to parent cell in MITOSIS? Genetically the SAME!

At the end of meiosis I, how many (human) chromosomes does each daughter cell have? 46

EXPLAIN how meiosis provides genetic variation? (2 ways) 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

How many daughter cells are produced from MITOSIS? 2

What is the haploid number in humans? 23

Are your sex cells diploid or haploid?

Are your somatic cells diploid or haploid?

______ is the male gamete. sperm