Fertilization
Sperm
What is involved in the maturation of a sperm
cell?
Sperm
Sperm
Sperm
How does flagellar structure contribute to sperm
motility?
Egg
Why is egg so much larger than sperm?
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yolk proteins
ribosomes
t-RNA
m-RNA
morphogenic factors
protective chemicals
Egg
What are some of the
structural components
of the egg?
Egg
When sperm enters at what meiotic stage is the egg?
Gametogenesis
Sperm Attraction
What is chemotaxis?
1
2
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4
Sperm Attraction
What is a sperm-activating peptide?
Sperm – Egg Interaction
What is involved in the acrosomal reaction in
sea urchins?
Sperm – Egg Interaction
What role does the
bindin protein play in
this interaction?
Sperm – Egg Interaction
How does gamete
recognition and
binding occur in
mammals?
Sperm – Egg Interaction
What follows the initial penetration of egg by the
sperm?
Sperm – Egg Interaction
What makes this
interaction in
mammals different?
Preventing Polyspermy
Why is polyspermy a
problem?
Preventing Polyspermy
What two mechanisms exist in sea urchins to
prevent polyspermy?
Preventing Polyspermy
Preventing Polyspermy
How is the cortical granule reaction
different in mammals?
Why is calcium so important to the cortical
granule reaction?
Egg Activation
How does egg metabolism respond to
stimulation by sperm?
Egg Activation
What signaling pathway releases intracellular
calcium ion concentration?
Fusion of Genetic Material
What does the sperm contribute to the
developing embryo?
What must happen for fusion to occur in
sea urchins?
How is the fusion different in mammals?
Rearrangement of Egg Cytoplasm
What kind of cytoplamic rearrangement occurs
as a result of fertilization?