Meiosis Chapter 10, Section 2.

Slides:

Advertisements

Similar presentations

Mitosis –vs- Meiosis Test Review

Advertisements

Section 11–4.

Meiosis Notes Cell division to form the gametes, sperm (male gamete) and egg (female gamete). Normal cells are diploid (2n): 2 copies of every gene. Gametes.

Section 11-4: Meiosis Where are genes located? Chromosomes in the nucleus Basic principles of genetics require 2 things: Each organism must receive a.

Starter Feb. 24, 2010 Copy & Answer

Meiosis Science 9 Biology.

CELL DIVISION Mitosis and Meiosis ASEXUAL SEXUAL (EUKARYOTES ONLY)

Answer the following question in a complete sentence.

DO NOW… The diagram below provides information about a carrot cell.

Meiosis Chapter 11.4 Objectives Describe how homologous chromosomes are alike and how they differ Contrast haploid and diploid cells Summarize the process.

10.2 MEIOSIS Martin GENES, CHROMOSOMES, AND NUMBERS A. Dipolid and Haploid Cells: ▫Diploid Cells: cell that have two of each kind of chromosome.

I can compare and contrast the two rounds of division in meiosis.

Ways to show the number of chromosomes in a cell. 2n 2 copies of each chromosome Body cells n 1 copy of each chromosome Sex cells DIPLOIDHAPLOID.

Meiosis and Fertilization my-OH-sis. Meiosis is cell division used for: Producing gametes (sex cells) What is Meiosis? ***Makes 4 different cells!***

Meiosis Division of sex cells. Meiosis Cell Division to make 4 new, genetically different sex cells.

Section 11–4.

Warm up: 1) How many chromosomes do human somatic (body) cells have?

In your notes: Create a Venn Diagram to Compare and Contrast Mitosis and Meiosis Use your notes and/or your book and/or your brain, or all three!!! You.

Meiosis Review.

Cell Division Notes Biology.

Answer the following question in a complete sentence.

Meiosis and Sexual Reproduction.

Cell Division: Meiosis

6.3 Meiosis Key Concepts and Vocabulary

Meiosis and Sexual Reproduction.

CELL DIVISION Mitosis and Meiosis ASEXUAL SEXUAL (EUKARYOTES ONLY)

Cell Division --Meiosis--.

SEXUAL REPRODUCTION.

Meiosis: Cell division

Cells go through two rounds of division in meiosis.

Cells go through two rounds of division in meiosis.

What can you remember about mitosis?

Sexual reproduction How many chromosomes do we have in body cells?

Sexual reproduction How many chromosomes do we have in body cells?

6.3 Meiosis Key Concepts and Vocabulary

Cells go through two rounds of division in meiosis.

Cell Division Notes Biology.

Sexual reproduction & Genetic inheritance

Start-up for 12/9/14 Refer to the karyotype on the right. Is this a male or female? Explain. What are autosomes? Which chromosomes in this karyotype.

Cells go through two rounds of division in meiosis.

Ways to show the number of chromo-somes in a cell.

Meiosis and Sexual Reproduction.

MITOSIS vs. MEIOSIS.

THE FORMATION OF SEX CELLS

Cells go through two rounds of division in meiosis.

Cell Division --Meiosis--.

Chapter Meiosis.

Meiosis and Sexual Reproduction.

Chromosomes & meiosis.

Cells go through two rounds of division in meiosis.

Cells go through two rounds of division in meiosis.

Intro to Meiosis.

Genes, Alleles, and meiosis

Cells go through two rounds of division in meiosis.

Cells go through two rounds of division in meiosis.

What can you remember about mitosis?

KEY CONCEPT During meiosis, sex cells are produced.

Meiosis Practice Test.

Cells go through two rounds of division in meiosis.

Cells go through two rounds of division in meiosis.

Meiosis Process Biology Chapter 6.2.

Cells go through two rounds of division in meiosis.

Cells go through two rounds of division in meiosis.

Presentation transcript:

Meiosis Chapter 10, Section 2

Meiosis Activity You need one purple book for every two students. You will be answering questions with your partner. Both of you need to write the answers in on a separate paper using FULL SENTENCES. You need to be prepared to share your answers with the class!

Turn to page 52 Read the section titled Meoisis: Sex, Heredity, and survival with your partner and answer the questions. Remember, you may be called on to answer the questions! What is a zygote? How many chromosomes does a zygote have? 2. What would happen if an egg and a sperm each had a full 23 pairs of chromosomes?

Turn to page 54 With your partner, discuss the model titled: Phases of Meiosis. Make sure you READ the captions. Please answer the questions. There are limitations to models. Why does it show 3 pairs of chromosomes for humans instead of 23? Describe what happens between prophase I and Metaphase I (Prometaphase I)

Turn to page 54 With your partner, discuss the model titled: Phases of Meiosis. Make sure you READ the captions. Please answer the questions. During meiosis, how many times are the chromosomes copied? How many times does the cell divide?

Turn to page 54 With your partner, discuss the model titled: Phases of Meiosis. Make sure you READ the captions. Please answer the questions. At the end of the First Meiotic Division (Meiosis I) how many cells are there? At the end of the Second Meiotic Division (Meiosis II) how many cells are there? How does this compare to Mitosis?

Turn to page 54 What do we call the four cells at the end of meiosis? With your partner, discuss the model titled: Phases of Meiosis. Make sure you READ the captions. Please answer the questions. What do we call the four cells at the end of meiosis? In a human, how many chromosomes will these cells have? Do they have sister chromatids? Are these cells called haploid or diploid cells?

Read “Errors in Aging Eggs” at the bottom of pg 54. When do men start and stop producing sperm (gametes)? Describe how female egg production is different than male sperm production. What is the effect of having “old eggs”?

Turn to pg 56 Compare and contrast mitosis and meiosis using a Venn diagram:

Turn to pg 58 and read “Why You’re Not Just Like Your Relatives” Explain the ‘Dance Analogy’ and what it means for meiosis: How many different way are there for the dancers/chromosomes to line up? Describe what ‘crossing over’ means: Why is it important that different people have a wide variety of genes?