DB Chapter 6: Fertilization at Hochschule Bonn-Rhein-Sieg

Flashcards and summaries for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg

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Study with flashcards and summaries for the course DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg

Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What happens in fertilization generally? 

Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What is the requirement of gametes for fertilization?

Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What is the process called, where diploid cells become haploid?

Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

Meiosis is the process by which one diploid eukaryotic cell devides to generate ____ haploid cells. 

Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What leads to DNA rearrangement in meiosis? 

Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

At the time of fertilization, the egg has a __________ pronucleus

Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What is the zona pellucida?

Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

The binding of sperms to the zona pellucida has some species-specificity.

Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

Which kind of enzymes do acrosomal enzymes mainly consist of? 

Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What is the difference between the egg and sperm fusion of sea urchins and mammals?

Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

At the time of fertilization the egg is arrested in the __________ of the second mitotic division.

Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What leads to completion of meiosis and formation of the female pronucleus?

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Exemplary flashcards for DB Chapter 6: Fertilization at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

DB Chapter 6: Fertilization

What happens in fertilization generally? 

Sperm and egg (gametes) fuse to form a zygote whose genome is derived from both parents. 

DB Chapter 6: Fertilization

What is the requirement of gametes for fertilization?

They have to reduce their genetic material by half: from diploid to haploid

DB Chapter 6: Fertilization

What is the process called, where diploid cells become haploid?

Meiosis

DB Chapter 6: Fertilization

Meiosis is the process by which one diploid eukaryotic cell devides to generate ____ haploid cells. 

4

DB Chapter 6: Fertilization

What leads to DNA rearrangement in meiosis? 

  • Pairing of homologous chromosomes
  • crossing-over 

DB Chapter 6: Fertilization

At the time of fertilization, the egg has a __________ pronucleus

haploid 

DB Chapter 6: Fertilization

What is the zona pellucida?

A glycoprotein matrix that surround the egg. 

DB Chapter 6: Fertilization

The binding of sperms to the zona pellucida has some species-specificity.

Right. 

DB Chapter 6: Fertilization

Which kind of enzymes do acrosomal enzymes mainly consist of? 

Mainly proteases

DB Chapter 6: Fertilization

What is the difference between the egg and sperm fusion of sea urchins and mammals?

Sea urchin sperm binds to the microvilli of the egg with the acrosomal process, while sperm of mammals bind with the equatorial domain.

Both are then fused and internalised. 

DB Chapter 6: Fertilization

At the time of fertilization the egg is arrested in the __________ of the second mitotic division.

Metaphase

DB Chapter 6: Fertilization

What leads to completion of meiosis and formation of the female pronucleus?

Calcium waves

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