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BSC 2011 > Reproduction > Flashcards

Reproduction Flashcards

1
Q

Sperm provides

A

one centriole
haploid set of DNA

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2
Q

Acrosome head

A

releases hydrolytic enzymes that puncture jelly coat
acrosomal process conencts to receptors and signals the egg to being the two steps to prevent polysperms
actin filaments as parts of acrosomal process

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3
Q

Fast block to polyspermy

A

ion channels open, allow sodium into cytoplasm from external material, polarizes egg to repel any sperm for 1 minute until calcium wave is finished

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4
Q

Slow Block to Polyspermy

A

Calcium wave
release calcium ions from the point the actin filament made contact with the jelly coat
fusion of cortical vessicles
water rushes in and creates space that becomes envellope
PERMANENT
ACTIVATES EGG

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5
Q

Cleavage

A

early stage of development that increases the amount of DNA to expedite the begining of cellular processses
same volume
BLASTOME

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6
Q

Blastula

A

result of cleavage

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7
Q

Blastome

A

individual cell in blastula

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8
Q

blasteoul

A

fluid filled center in the blastula

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BSC 2011 (7 decks)

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