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Embryonic Signaling Center: Spemann’s Organizer Quiz

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Embryonic Signaling Center: Spemann’s Organizer Quiz

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Questions and Answers

What defines a model organism?

Having a long generation time suitable for research.

Being a mammal with short life span.

Being a human species suitable for studying specific traits.

Having a characterized genome and similarity to humans. (correct)

Why are model organisms used in research?

To study traits unique to plants.

Because they have the longest generation time.

To experiment on humans directly.

When human experimentation is feasible or unethical. (correct)

Which of the following is NOT a practical consideration for selecting model organisms?

Easy for transformation and observation.

DNA sequencing technology available. (correct)

Comprehensive online database and tools for genetic studies.

Small size and rapid development.

What is a characteristic of Drosophila melanogaster that makes it a popular model organism?

~50% of its genes having vertebrate homologs. Signup and view all the answers

Why is it essential for model organisms to produce high amounts of offspring?

To ensure a large pool of experimental subjects. Signup and view all the answers

Which factor is crucial in the molecular genetics of life-span studies using model organisms?

The availability of gene inventory. Signup and view all the answers

What makes RNA interference studies easier with some model organisms?

Availability of specific tools and techniques. Signup and view all the answers

Why are non-human species preferred as model organisms over humans in certain studies?

Due to ethical concerns in using humans for experiments. Signup and view all the answers

'The Big Six' mentioned in the text refer to:

[Mouse, Chick, Frog, Zebrafish, Fruit fly, Nematode] Signup and view all the answers

Why do model organisms need to be amendable to observation and experimentation?

To allow for studying specific traits or diseases effectively. Signup and view all the answers