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Categorieën: Alle - meiosis - fertilization

door nur mastura 9 jaren geleden

961

egg activation

During the process of egg fertilization, a series of complex and coordinated events occur to ensure successful reproduction. The initial fusion of the egg and sperm triggers a significant rise in calcium levels within the egg, which in turn stimulates the release of cortical granules.

SBI3C

door Sofia Pinto

fl

door Tyler Heng

SumrunSheikh_MindMap_DNAwesomeRD

door Sumrun Sheikh

Biology 311C Concept Map

door Jesus Aguilar

To restart meiosis, the calcium signal mediates dramatic rearrangement of egg surface including :

egg activation

>Initiated by the fusing of egg and sperm >Causes rise in Ca2+ >Stimulate cortical granules to release their contents outside the egg >Cause formation of fertilization envelope (to slow block polyspermy)

egg activation

During the process of egg fertilization, a series of complex and coordinated events occur to ensure successful reproduction. The initial fusion of the egg and sperm triggers a significant rise in calcium levels within the egg, which in turn stimulates the release of cortical granules.

SBI3C

fl

SumrunSheikh_MindMap_DNAwesomeRD

Biology 311C Concept Map

To restart meiosis, the calcium signal mediates dramatic rearrangement of egg surface including :

egg activation

>Initiated by the fusing of egg and sperm >Causes rise in Ca2+ >Stimulate cortical granules to release their contents outside the egg >Cause formation of fertilization envelope (to slow block polyspermy)

Once egg activated,egg will resume and complete meiosis ii with release of 2nd polar body

Stages of egg fertilization

5) Cortical changes takes place (gray crescent in amphibians)

4)Vitelline layer strengthen and thickens

3)Formation of fertilization membrane

2) Sperm is drawn into egg cytoplasm

1) Egg membrane wraps microvilli around sperm head

Main topic

Initiated by

Independent Fertilization

Fertilization

Meaning

Process of interaction between sperm and egg at fertilization which stimulates the eggs to begin development

Mindomo

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egg activation

During the process of egg fertilization, a series of complex and coordinated events occur to ensure successful reproduction. The initial fusion of the egg and sperm triggers a significant rise in calcium levels within the egg, which in turn stimulates the release of cortical granules.

SBI3C

fl

SumrunSheikh_MindMap_DNAwesomeRD

Biology 311C Concept Map

To restart meiosis, the calcium signal mediates dramatic rearrangement of egg surface including :

egg activation

>Initiated by the fusing of egg and sperm >Causes rise in Ca2+ >Stimulate cortical granules to release their contents outside the egg >Cause formation of fertilization envelope (to slow block polyspermy)

Once egg activated,egg will resume and complete meiosis ii with release of 2nd polar body

Stages of egg fertilization

5) Cortical changes takes place (gray crescent in amphibians)

4)Vitelline layer strengthen and thickens

3)Formation of fertilization membrane

2) Sperm is drawn into egg cytoplasm

1) Egg membrane wraps microvilli around sperm head

Main topic

Initiated by

Independent Fertilization

Fertilization

Meaning

Process of interaction between sperm and egg at fertilization which stimulates the eggs to begin development

Vertel anderen over Mindomo

Mindomo

Meer informatie

Veelgestelde vragen