DB Chapter 11: Early development in drosophila melanogaster at Hochschule Bonn-Rhein-Sieg

Flashcards and summaries for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg

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Study with flashcards and summaries for the course DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg

Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What are the difficulties in studying drosophila melanogaster? 

Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What is a "chorion"? What is a "micropyle"?

Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

How long is the sperm's tail of drosophila? What is the function? 

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Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

The egg begins to organise its axes, _________

Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What type of cleavage is common for drosphila embryos? 

Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

When does the expression of zygotic genes begin? When are they greatly enhanced? 

Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

Why does the nuclear division slow down at cycle 14? 

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Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

After circle 14, which RNAs are degraded and which genome takes over the control of development? 

Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

How is the transition from maternal RNA development control to zygotic genome development control regulated? 

Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

When does gastrulation start? 

Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What is an acron? 

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Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What is telson? 

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Exemplary flashcards for DB Chapter 11: Early development in drosophila melanogaster at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

DB Chapter 11: Early development in drosophila melanogaster

What are the difficulties in studying drosophila melanogaster? 

Embryos are relatively complex, small and intransparent

DB Chapter 11: Early development in drosophila melanogaster

What is a "chorion"? What is a "micropyle"?

Chorion is a shell than surrounds the egg. Micropyle is the small opening of it, that allows passage of one sperm at a time.

DB Chapter 11: Early development in drosophila melanogaster

How long is the sperm's tail of drosophila? What is the function? 

extremely long, about 1,8 mm. It prevents other sperms from passing through the micropyle (polyspermy block). 

DB Chapter 11: Early development in drosophila melanogaster

The egg begins to organise its axes, _________

before the sperm enters.

DB Chapter 11: Early development in drosophila melanogaster

What type of cleavage is common for drosphila embryos? 

Meroblastic superficial cleavage.

DB Chapter 11: Early development in drosophila melanogaster

When does the expression of zygotic genes begin? When are they greatly enhanced? 

The expression of zygotic genes begins around cycle 11 and is greatly enhanced when cells are formed at cycle 14. 

DB Chapter 11: Early development in drosophila melanogaster

Why does the nuclear division slow down at cycle 14? 

Because of the appearance of gap phases in the cell cycle. 

DB Chapter 11: Early development in drosophila melanogaster

After circle 14, which RNAs are degraded and which genome takes over the control of development? 

Maternal RNA is degraded and the zygotic genome takes over control of development. 


DB Chapter 11: Early development in drosophila melanogaster

How is the transition from maternal RNA development control to zygotic genome development control regulated? 

By the ratio of chromatin to cytoplasm

DB Chapter 11: Early development in drosophila melanogaster

When does gastrulation start? 

Soon after mid-blastula transition.

DB Chapter 11: Early development in drosophila melanogaster

What is an acron? 

Terminal portion of the head

DB Chapter 11: Early development in drosophila melanogaster

What is telson? 

Tail 

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