Ch 4.1 & 4.2 reproduction comparison
description
Transcript of Ch 4.1 & 4.2 reproduction comparison
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Ch. 4.1 & 4.2
Sexual vs. Asexual
Reproduction
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Lesson 1 Reading Guide
1. Compare/Contrast sexual reproduction & asexual reproduction
2. What are the different types of asexual reproduction?
Focus Questions
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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
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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
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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?
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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
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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
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• For each type of asexual
reproduction, include:– Name of reproduction type
– Brief description
– Example
– Picture
2. What are the different types of asexual reproduction?
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Fission:Cell division in
prokaryotes
Ex: bacteria (E. Coli)
2. What are the different types of asexual reproduction?
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Mitotic cell
division:New unicellular
organism formed
through mitosis &
cytokinesis
Ex: amoebas
2. What are the different types of asexual reproduction?
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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?
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Animal Regeneration:Offspring grows from
piece of parent
Ex: starfish, sea urchins,
sponges, planarians
2. What are the different types of asexual reproduction?
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Vegetative reproduction:
Offspring grows from part
of parent plant
Ex: strawberries, potatoes,
African violets
2. What are the different types of asexual reproduction?
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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?
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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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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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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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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
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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
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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
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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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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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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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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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During what phase do the chromosomes line up in
the middle of the cell?
a. b. c. d.
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a. Prophase
b. Metaphase
c. Anaphase
d. Telophase
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During what phase does the DNA condense into
chromosomes and the nuclear membrane
disappear?
a. b. c. d.
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a. Telophase
b. Prophase
c. Anaphase
d. Metaphase
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During telophase, two identical __________
form.
a. b. c. d.
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a. Centrioles
b. Chromosomes
c. Nuclei
d. Spindle fibers
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When does the cell actually split into 2
separate daughter cells?
A. Prophase
B. Anaphase
C. Telophase
D. Metaphase
E. Interphase
F. Cytokinesis
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Prophase
Anaphase
Telophase
Meta
phase
Inte
rphase
Cytokin
esis
0 0 0000
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When does the DNA replicate (make copies)?
A. Prophase
B. Anaphase
C. Interphase
D. Metaphase
E. Telophase
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Prophase
Anaphase
Inte
rphase
Meta
phase
Telophase
0 0 000