Chapter 6 – Cell Reproduction

Cell Reproduction

• All living things ________________.• All living things pass on ________________to

the next generation. • However, not all living things reproduce the

same way.

How are we who we are?

• What makes us……..us?• Who made us this way??• Are we a product of sexual or asexual

reproduction?

Chromosomes

• Chromosomes – _____________________________________.

• Gene – _____________________________. – Codes for certain ____________.

• Chromatids – _______________________• 2 _____________make a whole chromosome

• 4 “arms”• Centromere -________________________.

• _____ _____ _____ _____ ______

Check List • 1) All living things need to ______________ in order to

pass characteristics on to the next generation.• 2) A ______________ contains DNA and is passed on to

offspring. • 3) A segment of DNA is called a ___________.• 4) What is half a chromosome called? • 5) What holds 2 chromatids together?• 6) Draw out a chromosome and label: chromatid,

centromere, and DNA.• 7) Discuss in at least 3 sentences about what DNA looks

like, how its important in our life, and why it is important that if something goes wrong with DNA what could happen.

Chapter 6 Section 2

Cell Reproduction

• A cell reproduces by dividing into two cells – called ______________.

• Mitosis – _____________________________________

*Mitosis is IMPORTANT:

• Its how living things ____________ :– Bone cells divide to form new bones– Plants roots grow further into ground as cells at

the root’s tips grow and divide• Its how living things ____________ :– Cut on the skin

Important facts about Mitosis:

• 1) Helps living things grow and repair.• 2) Produces offspring that are exactly identical

to parent.• 3) Example of asexual reproduction.

• Parent cell divides into _____________

5 STEPS :• I -

• P -

• M -

• A -

• T -

1 )Interphase

• Chromosomes get ___________________

2) Prophase – “prepare”

• Nuclear membrane _________________

3) Metaphase – “meet in the middle”

• Chromosomes line up in the _____________.• Spindles -

________________________________

4) Anaphase – “apart”

• Chromosomes are pulled _____________• __________ are pulled/move to the poles of

the cell.

5) Telophase – “two”

• _________________forms around new chromosomes

• Membrane starts to form between_______________________

• Splits into 2 new _________________.

Check List

• 1) Draw out the steps of Mitosis (PMAT) if you start off with a total of 4 chromosomes in the nucleus.– Label each step and put key parts to what is

happening.

Check List

• 1) Define Mitosis. • 2) Mitosis is an example of what kind of

reproduction?• 3) What happens during interphase?• 4) What is IPMAT? What happens during each step?• 5) Mitosis helps living things ___________ and

____________.• 6) Explain why it is important for the nuclear

membrane to disappear during mitosis?

Section 3Asexual vs Sexual Reproduction

Asexual Reproduction

• Asexual reproduction - ____________________________________

• Keys to:– _______________– _______________

2 types of Asexual Reproduction• Budding -

__________________________________________– Ex:

• Regeneration - ____________________________________________– Ex:

Advantage and Disadvantage • Advantage =

• Disadvantage =

Sexual Reproduction

• Sexual reproduction - ____________________________________

• Keys to:– __________________– __________________– __________________

Sex Cells

• Male– ________________

• Female – ________________

• _________ +__________ ______________

• Fertilized cell - ______________________

• Meiosis - _________________________________– _________ & __________

Advantage and Disadvantage

• Advantage =

• Disadvantage =

Checks• Asexual vs Sexual Reproduction• Mitosis vs Meiosis• Body cells vs Sex Cells• Male vs Female• Chromosome vs Chromatid• Gene vs DNA• Identical vs Variation• IPMAT –

Check List• 1) _________ is a form of asexual reproduction that body cells go

through to make more cells.• 2) What are the two forms of asexual reproduction seen in plants

and animals?• 3) Male sex cells are known as _________, whereas female sex

cells are known as ____________.• 4) If these 2 cells combine from #3, if forms a ____________ cell,

which is like a baby.• 5) Meiosis is involved in __________ cells, whereas Mitosis is

involved in ____________ cells.• 6) Give an example of an organism that goes through

regeneration:• 7) Give an example of an organism that goes through budding:• 8) Sexual reproduction involves ____ parents and creates offspring

with ________________.

• Zygote

• Gametes

• Centrioles • What starts with an “E” and ends with an “E”

but only contains one letter and travels all around the world.

• An ____________________