Genetics KWLKWL. What makes you…you? How do you get your DNA? Your DNA! Heredity: the passing of physical characteristics from parents to offspring Genetics:

Slides:



Advertisements
Similar presentations
Sexual Reproduction and Meiosis
Advertisements

Meiosis Cornell notes.
 DNA stands for “Deoxyribonucleic acid”  DNA is the genetic material of an organism; it is passed down from parents to offspring  DNA’s shape is called.

Chapter 6 Chromosomes and Cell Reproduction
Packet page # DNA. Packet page # Goals and Standards After completing all activities and assignments in this unit, students will be able to: Describe.
Cell Division.
30 Seconds 10 Time’s Up! 3 Minutes 1 Minute 4 Minutes Minutes
Section 11-4: Meiosis Where are genes located? Chromosomes in the nucleus Basic principles of genetics require 2 things: Each organism must receive a.
Meiosis.
Meiosis Make a cover page: Your Name Chapter 11 Meiosis Feel free to decorate your cards as you go!
Cell Division Meiosis Relationship Between Meiosis and Genetics Meiosis results in egg (females) and sperm (males) cells. When egg and sperm combine.
Chapter 9-10 Mitosis & Meiosis
Chromosomes and Cell Reproduction
CELL DIVISION Mitosis and Meiosis ASEXUAL SEXUAL (EUKARYOTES ONLY)
Answer the following question in a complete sentence.
Meiosis Sexual Reproduction.
The genetic passing of characteristics from parent to offspring
Meiosis 10/29/09. What can you tell me about Mitosis?
Meiosis Chapter 11.4 Objectives Describe how homologous chromosomes are alike and how they differ Contrast haploid and diploid cells Summarize the process.
Meiosis.
Part 2. Cell reproduction of somatic cells (all cells except sperm/egg) This is how we grow, develop, and repair Involves chromosomes: Complex structure.
Meiosis Division of sex cells. Meiosis Cell Division to make 4 new, genetically different sex cells.
Meiosis. Now that you know all about DNA…. How is DNA passed from parent to offspring? How is DNA passed from parent to offspring? There are two main.
Genetics - MEIOSIS Background Information  During interphase, DNA is uncondensed and is called chromatin.  When cells get ready to divide, the chromosomes.
Genes, Mitosis, and Cytokinesis Chapter 9 (pgs ; )
The Cell Cycle Notes.
Meiosis – the formation of sex cells
Cell Division Notes Biology.
Chromosomes & Mitosis and Meiosis
Chromosomes & Cell Division Notes
Cell Reproduction.
MEIOSIS (making sperm and egg cells…)
MEIOSIS Chapter 11-4 Making reproductive cells …. called the gametes
Separating the components of the cell into two parts
The Importance of Mitosis
Mitosis and Cytokinesis
Cell Reproduction: The Cell Cycle.
CELL DIVISION Mitosis and Meiosis ASEXUAL SEXUAL (EUKARYOTES ONLY)
MEIOSIS (making sperm and egg cells…)
Meiosis, DNA Structure & Mutations
MITOSIS & MEIOSIS INFO.
The Importance of Mitosis
MEIOSIS: Specialized Cell Division
Reproduction, Mitosis, Meiosis
MEIOSIS (making sperm and egg cells…)
Meiosis Page
Nucleic Acids and Cell Reproduction
Structure of DNA & Replication
The Importance of Mitosis
30 Seconds 10 Time’s Up! 3 Minutes 1 Minute 4 Minutes Minutes
Meiosis I results in 2 haploid daughter cells
Nuclear division of sex cells
MEIOSIS Making gametes….
DO NOW!!! F, T, T True or False:
DNA, Mitosis, & Meiosis Review
Cell Reproduction Chapter 3, Section 5.
Cell Growth and Division
The Importance of Mitosis
Mitosis and Meiosis Review
Biology Notes 2 Mitosis vs Meiosis.
5.4 Asexual Reproduction KEY CONCEPT Many organisms reproduce by cell division.
THE CELL CYCLE.
Meiosis.
Meiosis.
Nuclear division of sex cells
Meiosis.
Unit 4 “Genetics” Section 11.4 MEIOSIS.
Meiosis Chapter 11-4.
Mitosis: When Cells Divide
Presentation transcript:

Genetics KWLKWL

What makes you…you? How do you get your DNA? Your DNA! Heredity: the passing of physical characteristics from parents to offspring Genetics: study of heredity

Deoxyribonucleic Acid It is in the shape of a Double helix = twisted ladder DNA stands for…

DNA is your genetic code 4 nitrogen bases make up your “genetic alphabet”. –A = adenine –T = thymine –G = guanine –C = cytosine These bases can be arranged differently like the letters of the alphabet to make different words. Your genetic words tell your body what protein it needs to make to get a certain job done. Remember: A pairs with T G pairs with C

Complete the dna strand… AAG GCCATAGAC

A change in the pattern creates a mutation. This may be good, bad or neutral (no effect) for the person.

Chromatin vs. Chromosomes Chromatin: unwound DNA (cell is not dividing) Chromosome: Scrunched up DNA (cell is dividing) Both are DNA!

You have 23 pairs of homologous (same size, shape and genetic info) chromosomes (23 from your mom and 23 from your dad). That’s 46 total! Each pair of chromosomes has genes for certain traits on it.

The sex chromosomes are x and y xx for a girl and xy for a boy. This means dad determines the baby’s gender! A karyotype lets you see all of the chromosomes a person has!

Cell Cycle Interphase = normal cell activity G1,S,G2 Mitosis = cell division PMAT = Prophase  Metaphase  Anaphase  Telophase Cytokinesis = cell splitting

Mitosis 1 cell divides to create 2 identical cells!

Create a mitosis flip book, write the name of the phase and draw what it looks like (we will only use the right hand side of the book for mitosis….we will use the left hand side later for meiosis)

Front Cover…. Mitosis: Cell Division 2 identical cells created

2nd page Prophase: DNA scrunches into chromosomes

3 rd page Metaphase: Chromosomes line up in the middle of the cell

4th page Anaphase: Chromatids (2 halves of the chromosome) are separated and move to opposite sides of the cell

5th page Telophase: cell begins to divide into two

6th page Cytokinesis: 2 identical cells are formed

MeiosisThe chromosome pairs separate and are divided into two different cells. This creates gametes (sperm and egg cells) that have only half as many chromosomes as the regular body cells. Body cell = 46 total chromosomes (diploid) gametes = 23 total chromosomes (haploid) Why bother splitting the number Of chromosomes in half?

Meiosis 1: –Prophase 1 = DNA scrunches into chromosomes –Metaphase 1 = chromosomes line up in the middle across from their pair –Anaphase 1 = the pairs of chromosomes separate to opposite ends –Telophase 1 = the two cells split Meiosis 2: –Metaphase 2 = chromosomes line up in the middle in a straight line –Anaphase 2 = the chromosome splits sending one copy one way and the other copy the other way –Telophase 2 = the cells separate and you know have 4 haploid gametes!

Create a meiosis flip book, write the name of the phase and draw what it looks like (use the left hand side of the flip book you created for mitosis!)

Front Cover…. Meiosis: Creates gametes (1/2 # of chromosomes)

2 nd page Meiosis 1: One body cell divides into 2

3 rd page Prophase 1: DNA scrunches into chromosomes

4 th page –Metaphase 1 = chromosomes line up in the middle across from their pair

5 th page –Anaphase 1 = the pairs of chromosomes separate to opposite ends

6 th page Telophase 1 = the two cells split

7 th page Meiosis 2: Two haploid cells divides into 4 gametes

8 th page Metaphase 2 = chromosomes line up in the middle in a straight line

9 th page Anaphase 2 = the chromosome splits sending one copy one way and the other copy the other way

10 th page –Telophase 2 = the cells separate and you know have 4 haploid gametes!