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Categorii: Tot - meiosis - fertilization

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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.

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Life cycles of animals

după TEY XUAN QIN N/A

Ap Bio COncept map

după rafael londono

Cell nucleus

după francisca cortes

Central topic1

după Cathy Huynh

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.

Life cycles of animals

Ap Bio COncept map

Cell nucleus

Central topic1

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

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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.

Life cycles of animals

Ap Bio COncept map

Cell nucleus

Central topic1

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

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Mindomo

Mai multe informații

Întrebări frecvente