reproduction what’s the difference in these two forms of reproduction?

ReproductionReproduction

What’s the difference in What’s the difference in these two forms of these two forms of

reproduction?reproduction?

Essential Question:Essential Question:How does sexual and How does sexual and asexual reproduction asexual reproduction

affect the passing of traits affect the passing of traits to offspring?to offspring?

Standard:Standard:S7L3b. Compare and contrast S7L3b. Compare and contrast that organisms reproduce that organisms reproduce asexually and sexually (bacteria, asexually and sexually (bacteria, protists, fungi, plants and protists, fungi, plants and animals)animals)

Previously, you learned that cells make more cells through the process of …

You learned that sex cells are created in a process called…

You learned that adults produce offspring with the help of which system…

Mitosis

Meiosis

Reproductive System

For this unit, we For this unit, we will look at will look at

reproduction with reproduction with a more specific a more specific

focus on the focus on the passing of traits.passing of traits.

Asexual

Sexual

Use the Types of Use the Types of Reproduction Chart to take Reproduction Chart to take

NotesNotes

AsexualAsexualReproductionReproduction

Most unicellular organisms, and a few multicellular organisms use cell division to reproduce in a process called asexual reproduction.

A parent organism produces one or more new organisms that are identical to the parent and live independently of the parent

Asexual Asexual ReproductionReproduction

The organism that produces the new organism or organism is the parent

Each new organism is an offspring

The offspring produced by asexual reproduction are genetically identical to the parent.

Binary Fission is a form of asexual reproduction that

occurs in cells that do not

contain a nucleus (Prokaryotes)

Other Examples of Other Examples of Asexual Asexual

Sexual Sexual ReproductionReproduction

Type of reproduction in which two parent cells

(male and female reproductive cells)

combine to form offspring with genetic material from

both cells.

Heredity is the passing of Genes from parents to offspring.

A Eukaryotic cell has a Nucleus that contains

genetic material.

A Chromosome is the structure that holds the genetic material

(DNA).

DNA is the genetic material that provides instructions for all the

body’s functions.

A Gene is a section of DNA that provides

instructions for specific traits.

Each species of living things has a characteristic number of chromosomes.

Humans have 23 pairs, for a total of 46 chromosomes.

Sexual ReproductionSexual Reproduction

Recall from our previous unit the cell process called Meiosis.

What was the purpose of Meiosis?

What was our general description of Meiosis?

Make Sex Cells

One Cell Makes Four Cells

The process of Meiosis creates sex cells (sperm and egg in humans) that contain half the genetic material (half the 46 chromosomes)

During sexual reproduction, sex cells are combined to form unique offspring.

46Chromosomes

23Chromosomes

ReproductionReproductionhttp://www.youtube.com/watch?v=jk2RJm5RBEk

Asexual & Asexual & Sexual Sexual

ReproductiReproduction Sorting on Sorting

ActivityActivity

Investigating Investigating Reproductive Reproductive

Strategies ActivityStrategies Activity

Comparing Comparing Asexual & Asexual &

Sexual Sexual ReproductioReproductio

reproduction what’s the difference in these two forms of reproduction?

form of asexual reproduction

classification unit

forms of reproduction

genetic material dna

asexual reproductionsexual

sex cells sperm

parent cells male

genetic material half

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