ch 4.1 & 4.2 reproduction comparison
DESCRIPTION
reproductionTRANSCRIPT
Ch. 4.1 & 4.2
Sexual vs. Asexual
Reproduction
Lesson 1 Reading Guide
1. Compare/Contrast sexual reproduction & asexual reproduction
2. What are the different types of asexual reproduction?
Focus Questions
Lesson 1
• Sexual reproduction:
– 2 parents produce offspring that is genetically different (combination of both parents’ DNA)
• The cells that combine during sexual reproduction are called sex cells: the egg and sperm cells (both haploids).
• Zygote – the fertilized cell (diploid)
1. Compare/Contrast sexual reproduction & asexual reproduction
Lesson 1
During a process called fertilization, an egg cell and a sperm cell join together to create a zygote.
1. Compare/Contrast sexual reproduction & asexual reproduction
Lesson 1
The fertilized egg, formed when sex cells join together, divides by mitosis to create a diploid organism.
How does Meiosis relate to Sexual Reproduction?
Lesson 1
• Asexual reproduction:– 1 parent organism produces offspring that
is genetically identical (without using
meiosis & fertilization)
• 6 types of asexual reproduction:– Fission
– Mitotic cell division
– Budding
– Animal regeneration
– Vegetative reproduction
– Cloning
1. Compare/Contrast sexual reproduction & asexual reproduction
Sexual
Reproduction
Both Asexual
Reproduction
2 parents = offspring
genetically different
1 parent = offspring
genetically identicalGenetic info passed
on to offspring
Creates genetic
variation (diversity)No genetic variation
Involves meiosis to
create haploid cells
Does not involve
meiosisBoth can involve
mitosis
Consumes time &
energy (mates,
maturity, etc.)
Saves time & energy
(no mate required)
1. Compare/Contrast sexual reproduction & asexual reproduction
• For each type of asexual
reproduction, include:– Name of reproduction type
– Brief description
– Example
– Picture
2. What are the different types of asexual reproduction?
Fission:Cell division in
prokaryotes
Ex: bacteria (E. Coli)
2. What are the different types of asexual reproduction?
Mitotic cell
division:New unicellular
organism formed
through mitosis &
cytokinesis
Ex: amoebas
2. What are the different types of asexual reproduction?
Budding:New organism grows
by mitosis &
cytokinesis on the
body of its parent
Ex: hydra & yeast
2. What are the different types of asexual reproduction?
Animal Regeneration:Offspring grows from
piece of parent
Ex: starfish, sea urchins,
sponges, planarians
2. What are the different types of asexual reproduction?
Vegetative reproduction:
Offspring grows from part
of parent plant
Ex: strawberries, potatoes,
African violets
2. What are the different types of asexual reproduction?
Cloning:
Offspring produced by a
cell or cluster of cells
taken from a
multicellular organisms
(performed in a lab)
Ex: fruits & veggies through
tissue cultures; Dolly
the sheep
2. What are the different types of asexual reproduction?
Which type of reproduction occurs
when the genetic materials from two
different cells combine to produce
offspring?
A. Animal
B. Asexual
C. Sexual
D. Zygote
Animal
Asexual
Sexual
Zygote
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45
What is the name of the new cell
formed through fertilization during
sexual reproduction?
A. An egg
B. A sperm
C. A chromosome
D. A zygote
An egg
A sperm
A chro
moso
me
A zygote
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45
Which term describes offspring growing from a piece of its parent?
A. Budding
B. Cloning
C. Fission
D. Regeneration
Budding
Clonin
g
Fissio
n
Regeneratio
n
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45
Which process do farmers use to make copies of a plant with desirable traits?
A. Budding
B. Cloning
C. Regeneration
D. Vegetative propagation
Budding
Clonin
g
Regeneratio
n
Vegeta
tive p
ropaga
tion
0 000
45
What type of asexual reproduction is performed in a laboratory to produce identical individuals from a cell or cluster of cells?
A. Cloning
B. Mitosis
C. Regeneration
D. Vegetative reproduction
Clonin
g
Mito
sis
Regeneratio
n
Vegeta
tive re
product
ion
0 000
45
A new organism grows, by mitosis and cell
division, on the body of its parent during which
process?
A. Budding
B. Cloning
C. Regeneration
D. Vegetative
Reproduction
Budding
Clonin
g
Regeneratio
n
Vegeta
tive R
eproduct
ion
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45
What is the name for a cell that has only half of
the chromosomes?
A. chromatid
B. diploid
C. haploid
D. homologue
chro
mat
id
diplo
id
haplo
id
homolo
gue
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45
If a diploid cell with 20 chromosomes goes
through meiosis, how many chromosomes
will the resulting haploid cell have?
A. 10
B. 20
C. 30
D. 40
10 20 30 40
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45
If a diploid cell with 12 chromosomes goes
through mitosis, how many chromosomes
will the resulting diploid cell have?
A. 3
B. 6
C. 12
D. 24
3 6 12 24
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45
Which type of cells go through meiosis?
A. Body cells
B. Brain cells
C. Haploid cells
D. Reproductive cells
Body cells
Brain
cells
Haploid
cells
Reproduct
ive ce
lls
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45
During what phase do the chromosomes line up in
the middle of the cell?
a. b. c. d.
0 000
a. Prophase
b. Metaphase
c. Anaphase
d. Telophase
45
During what phase does the DNA condense into
chromosomes and the nuclear membrane
disappear?
a. b. c. d.
0 000
a. Telophase
b. Prophase
c. Anaphase
d. Metaphase
45
During telophase, two identical __________
form.
a. b. c. d.
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a. Centrioles
b. Chromosomes
c. Nuclei
d. Spindle fibers
45
When does the cell actually split into 2
separate daughter cells?
A. Prophase
B. Anaphase
C. Telophase
D. Metaphase
E. Interphase
F. Cytokinesis
45
Prophase
Anaphase
Telophase
Meta
phase
Inte
rphase
Cytokin
esis
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When does the DNA replicate (make copies)?
A. Prophase
B. Anaphase
C. Interphase
D. Metaphase
E. Telophase
45
Prophase
Anaphase
Inte
rphase
Meta
phase
Telophase
0 0 000