Finishing your poster... Can you be creative? Human chromosomes.

Slides:

Advertisements

Similar presentations

Cell Division (Continued) – Meiosis

Advertisements

Meiosis is a special form of cell division.

Learning Objectives: I can explain…  …how Sexual Reproduction is different from Asexual Reproduction.  …how sex cells are created and how this is different.

Bellwork: Identify which “PHASE” the cells are going through and DRAW that cell.

Chapter 4.3.  Gametes:  Reproductive cells. They contain half the usual number of chromosomes.  Egg:  Gamete that is formed by the female.  Sperm:

Cell Division and Fertilization Contents Introducing cell division What is mitosis? What is meiosis? Mitosis or meiosis? Chromosomes and fertilization.

MEIOSIS: The Production of Sex Cells *Click for Animation*

Reproduction What’s the difference in these two forms of reproduction?

L.O: To understand meiosis and how the sex cells determine gender

You and Your Genes Revision Lesson 1. What are Genes? All living organisms are made of cells All living organisms are made of cells Most cells have a.

Sexual Reproduction. Key Point #1 Sexual reproduction is the process in which organisms produce gametes that combine during fertilization to create a.

How come everyone looks different, but sometimes family members look similar?

Mitosis vs. Meiosis Division of body cells and sex cells.

Warm Up Use the following words in 2-3 sentences to demonstrate what you remember about Mitosis: division, chromosomes, copying, cells, PMAT.

You have body cells and gametes.

Human Reproduction and Alleles

Today’s Agenda… Bellringer: What are the characteristics of asexual reproduction? Notes on Sexual Reproduction Homework.

The Cell and Inheritance What is the difference between sexual and asexual reproduction? What are the differences between mitosis and meiosis? How many.

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;

Cell Division (Continued) – Meiosis Chromosomes are DNA! Chromosomes contain genetic information.

2.5.6 Genetic Inheritance. Lesson Objectives At the end of this lesson you should be able to 1.Give a definition for a gamete 2.Understand gamete formation.

Cell division in sexual reproduction

Cell Division – Meiosis

Sexual Reproduction.

Mitosis vs. Meiosis A little bit of review…

Cell Division and Fertilization

The Process of Making Sex Cells

Cell Division and Fertilization

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 and Meiosis When Cells Divide.

You have body cells and gametes.

HOMEWORK: VOCABULARY somatic cell gamete homologous chromosome

You have body cells and gametes.

You have body cells and gametes.

Sexual Reproduction.

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.

You have body cells and gametes.

Where does my DNA Come From?

Meiosis The process of cell division in which male and female gametes are produced in order for sexual reproduction to take place.

You have body cells and gametes.

You have body cells and gametes.

Meiosis Making the sex cells.

You have body cells and gametes.

You have body cells and gametes.

You have body cells and gametes.

Mitosis and Meiosis When Cells Divide.

You have body cells and gametes.

Some organisms, such as yeast and bacteria, reproduce asexually:

Reproduction Definitions

“Methods of Reproduction”

Fertilization The process of haploid gametes joining together to form a diploid cell with 2n chromosomes. n chromosomes come from the male parent and n.

You have body cells and gametes.

You have body cells and gametes.

You have body cells and gametes.

You have body cells and gametes.

You have body cells and gametes.

You have body cells and gametes.

Chromosomes and Meiosis

Warm Up: “Should This Dog Be Called Spot?”

You have body cells and gametes.

Presentation transcript:

Finishing your poster... Can you be creative?

Human chromosomes

How many chromosomes? How many chromosomes are there in human sex cells? How many chromosomes are there in each new human body cell produced by mitosis? 46 chromosomes (23 matching pairs) 23 unpaired chromosomes

How many chromosomes? Human sex cells have a set of 23 unpaired chromosomes – that’s half the usual number. Sex cells in animals and plants follow the same rules. They have half the usual number of chromosomes. They have a complete set of single chromosomes. Why is this important for fertilization and reproduction?

There are two types of sex chromosome with names that are very easy to remember! X and Y chromosomes Females have two X chromosomes, one from each parent. X chromosomeY chromosome XY XX Males have one X chromosome and one Y chromosome.

Fertilization animation FLASH 6 – Fertilisation FLASH 2 – Mitosis drag & drop

Chromosomes and fertilization

Reproduction Sexual Asexual

CELL NUCLEOUS CHROMOSOME DNA GENE HOMEWORK...