Transcript Asexual & Sexual Reproduction

Reproduction
What’s the difference in these
two forms of reproduction?
Essential Question:
How does sexual and asexual
reproduction affect the passing
of traits to offspring?
Standard:
S7L3b. Compare and contrast that
organisms reproduce asexually and
sexually (bacteria, protists, fungi,
plants and animals)
Reproduction

Previously, you learned that cells make
more cells through the process of …
Mitosis

You learned that sex cells are created in
a process called…
Meiosis

You learned that adults produce
offspring with the help of which system…
Reproductive System
For this unit, we will
look at reproduction
with a more specific
focus on the passing
of traits.
Reproduction
Asexual
vs.
Sexual
Use the Types of Reproduction
Chart to take Notes
Asexual
Reproduction
Asexual Reproduction

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 Reproduction

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.
Asexual Reproduction
Asexual Reproduction
Binary Fission is a
form of asexual
reproduction that
occurs in cells
that do not
contain a nucleus
(Prokaryotes)
Asexual Reproduction
Other Examples of
Asexual Reproduction
Sexual Reproduction
Sexual Reproduction
Type of reproduction in which
two parent cells (male and
female reproductive cells)
combine to form offspring
with genetic material from
both cells.
A Eukaryotic cell has a
Nucleus that contains
genetic material.
A
is the
A Chromosome
Gene is a section
holds
ofstructure
DNA thatthat
provides
the
genetic material
instructions
for
(DNA).
specific
traits.
Heredity is the
passing of Genes
from
parents
to
DNA is the genetic
material that provides
offspring.
instructions for all the
body’s functions.
Sexual Reproduction


Each species of living things has
a characteristic number of
chromosomes.
Humans have 23 pairs, for a total of
46 chromosomes.
Sexual Reproduction

Recall from our previous unit the cell
process called Meiosis.

What was the purpose of Meiosis?
Make Sex Cells

What was our general description of
Meiosis?
One Cell Makes Four Cells
Sexual Reproduction

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.
46
Chromosomes
23
Chromosomes
Sexual Reproduction
Sexual Reproduction
Reproduction
http://www.youtube.com/
watch?v=jk2RJm5RBEk
Asexual &
Sexual
Reproduction
Sorting
Activity
Investigating
Reproductive Strategies
Activity
Comparing
Asexual &
Sexual
Reproduction