Season 1: DNA and Chromosomes Episode 5.5: Chromosomes

Slides:

Advertisements

Similar presentations

Chapter 6 Meiosis.

Advertisements

Learning Targets “I Can…” Contrast mitosis and meiosis. Identify the process that creates gametes (sex cells).

1 Meiosis and genetic variation. Introduction 2 3 Genes DNA is organized in chromosomes. –Genes have specific places on chromosomes.

What is mitosis? The way cells divide to produce more body cells.

Sex Cells Gametes (germ cells) Eggs and Sperm Somatic Cells All other cells Questions: 1, 2, 3, 4.

MEIOSIS (textbook section 3.1 pg 74).  Sexual reproduction produces offspring that is genetically similar, but different from the parents. This is accomplished.

Answer the following question in a complete sentence.

Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu 2 major groups of Cells 1.Somatic Cells Body cells Diploid = 2n –two.

6.1 Chromosomes and Meiosis KEY CONCEPT Gametes have half the number of chromosomes that body cells have.

You have body cells and gametes.

UNIT 3: GENETICS: The study of genes, heredity, and variation.

Meiosis 2n n n = number of chromosome Diploid: cells that have two copies of every chromosome Haploid: cells that have one copy of every chromosome Meiosis.

Meiosis: Creation of the Sex Cells. What is Meiosis?? Meiosis- creation of sex cells (eggs, sperm) Meiosis- creation of sex cells (eggs, sperm) Occurs.

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

Learning Target: Mitosis v. Meiosis I Can…Compare and contrast key points between the process of mitosis and the process of meiosis I Will… Describe the.

SECTION 6.1 CHROMOSOMES AND MEIOSIS. YOU HAVE BODY CELLS AND GAMETES  Somatic Cells  Definition: body cells; make up most of your body tissues and organs;

5c. Meiosis Chapter 6.1 & 6.2.

Science Content Standards

Meiosis Review.

Answer the following question in a complete sentence.

Terms YOU need to know!.

Review What is the difference between chromatin, chromatids, and chromosomes? Chromatin = DNA uncoiled (loose), Chromatid = One half of a chromosome, Chromosome.

Mom Dad Human body cells have 23 pairs of chromosomes and 46 total Each pair of chromosomes is called Homologous pairs and have copies of the same genes.

MITOSIS & MEIOSIS INFO.

You have body cells and gametes.

You have body cells and gametes.

KEY CONCEPT Gametes have half the number of chromosomes that body cells have.

Mitosis vs. Meiosis.

You have body cells and gametes.

HOMEWORK: VOCABULARY somatic cell gamete homologous chromosome

Some helpful definitions

You have body cells and gametes.

You have body cells and gametes.

Chromosome Structure Review

You have 2 types of cells: somatic cells and gametes.

You have body cells and gametes.

DNA Review DNA – genetic material

The student is expected to: 6A identify components of DNA, and describe how information for specifying the traits of an organism is carried in the DNA.

Week 8 Vocab Definitions

Season 1: Of Genes and Germs Episode 3: DNA Extraction

You have body cells and gametes.

You have body cells and gametes.

You have body cells and gametes.

S3: HEREDITY E6: KARYOTYPES

You have body cells and gametes.

Chapter Meiosis.

You have body cells and gametes.

You have body cells and gametes.

Mitosis vs. Meiosis.

You have body cells and gametes.

You have body cells and gametes.

Chromosomes & meiosis.

Meiosis Cell division that makes 4 genetically different daughter cells Occurs in sex cells (sperm & eggs) called gametes Chromosome Number per cell.

You have body cells and gametes.

You have body cells and gametes.

You have body cells and gametes.

MITOSIS & MEIOSIS INFO.

Somatic cells Gametes Homologous chromosomes d. Sex cells

Mitosis vs. Meiosis.

You have body cells and gametes.

KEY CONCEPT During meiosis, sex cells are produced.

Meiosis Practice Test.

Season 1: Of Genes and Germs Bell Ringer: Find your new seat!

You have body cells and gametes.

Chromosomes and Meiosis

Genetics The Blueprint Idea Genes provide the blueprint for life

You have body cells and gametes.

Presentation transcript:

Season 1: DNA and Chromosomes Episode 5.5: Chromosomes Series: Genetics Season 1: DNA and Chromosomes Episode 5.5: Chromosomes Objective: Explain the organization of chromosomes in human cells Bell Ringer: Take out your notebook and fill out you ToC

I. CHROMOSOMES

I. CHROMOSOMES A. Human somatic cells contain 23 pairs of homologous chromosomes, or 46 total chromosomes

I. CHROMOSOMES A. Human somatic cells contain 23 pairs of homologous chromosomes, or 46 total chromosomes -Homologous chromosomes have the same genes

a. 23 chromosomes come from mom

a. 23 chromosomes come from mom b. 23 chromosomes come from dad

1. Chromosomes 1-22 are autosomes, they do not affect gender.

1. Chromosomes 1-22 are autosomes, they do not affect gender. 2. The X and Y chromosomes are sex chromosomes and DO determine gender.

3. Somatic cells are diploid, they contain both sets of chromosomes.

3. Somatic cells are diploid, they contain both sets of chromosomes. 4. Gametes are haploid, they contain one set of chromosomes.

Season 1: DNA and Chromosomes Series: Genetics Season 1: DNA and Chromosomes Episode 6: Meiosis Objective: Create a visual aid to help learn the stages of meiosis. Bell Ringer: Grab an article from the front desk. After reading it, in your notebook write a PARAGRAPH describing what it was about.