Question
Order the fallowing Meiosis finishes
Acrosomal enzymes disrupt the corona radiata
Secondary oocyte present in oviduct
Ovulation
Cytokinesis of zygote
Oocyte activation
Female pronucleus forms
Male pronucleus forms
Amphimixis
Acrosomal enzymes disrupt the corona radiata
Secondary oocyte present in oviduct
Ovulation
Cytokinesis of zygote
Oocyte activation
Female pronucleus forms
Male pronucleus forms
Amphimixis
Answers
GPT-4o mini
To order the events you provided regarding meiosis and fertilization, we need to clarify some concepts and establish a logical sequence. Here’s the corrected sequence of events relating to fertilization and development of the zygote:
1. **Ovulation** - The release of the secondary oocyte from the ovary.
2. **Secondary oocyte present in oviduct** - After ovulation, the secondary oocyte travels into the oviduct (fallopian tube).
3. **Acrosomal enzymes disrupt the corona radiata** - Sperm encounters the oocyte and the acrosomal reaction allows sperm to penetrate the protective layers surrounding the oocyte.
4. **Oocyte activation** - Upon successful penetration by sperm, the secondary oocyte completes its second meiotic division and becomes a mature ovum.
5. **Male pronucleus forms** - The sperm nucleus enters the oocyte and transforms into the male pronucleus.
6. **Female pronucleus forms** - The oocyte, having completed meiosis, forms the female pronucleus.
7. **Amphimixis** - The fusion of the male and female pronuclei to form a diploid zygote.
8. **Cytokinesis of zygote** - The zygote undergoes division, leading to cleavage, the first cell divisions of the embryo.
So, the ordered sequence is:
1. Ovulation
2. Secondary oocyte present in oviduct
3. Acrosomal enzymes disrupt the corona radiata
4. Oocyte activation
5. Male pronucleus forms
6. Female pronucleus forms
7. Amphimixis
8. Cytokinesis of zygote
1. **Ovulation** - The release of the secondary oocyte from the ovary.
2. **Secondary oocyte present in oviduct** - After ovulation, the secondary oocyte travels into the oviduct (fallopian tube).
3. **Acrosomal enzymes disrupt the corona radiata** - Sperm encounters the oocyte and the acrosomal reaction allows sperm to penetrate the protective layers surrounding the oocyte.
4. **Oocyte activation** - Upon successful penetration by sperm, the secondary oocyte completes its second meiotic division and becomes a mature ovum.
5. **Male pronucleus forms** - The sperm nucleus enters the oocyte and transforms into the male pronucleus.
6. **Female pronucleus forms** - The oocyte, having completed meiosis, forms the female pronucleus.
7. **Amphimixis** - The fusion of the male and female pronuclei to form a diploid zygote.
8. **Cytokinesis of zygote** - The zygote undergoes division, leading to cleavage, the first cell divisions of the embryo.
So, the ordered sequence is:
1. Ovulation
2. Secondary oocyte present in oviduct
3. Acrosomal enzymes disrupt the corona radiata
4. Oocyte activation
5. Male pronucleus forms
6. Female pronucleus forms
7. Amphimixis
8. Cytokinesis of zygote