30 Questions
What is the definition of genetics?
The branch of biology dealing with heredity and variation
Who coined the term 'genetics' and what does it mean?
William Bateson, meaning 'to become or grow into something'
What is the significance of genetics within biology?
It impinges all aspects of biology
How has the field of genetics advanced?
In a nonsynchronous manner due to various stimuli
Who is credited with the beginnings of genetics as a science?
Gregor Mendel
In what year did Gregor Mendel live?
1822-1884
Who first challenged the Theory of Pangenesis?
August Weismann
According to Weismann's Germplasm Theory, what perpetuates itself in reproduction generation after generation?
Germplasm
What did Kolreuter observe about hybrids between species and their fertile offsprings?
Hybrids showed considerable diversity
What was the proposed mechanism of evolutionary change before August Weismann challenged it?
Theory of Pangenesis
According to Weismann, what was the primary role of somatoplasm in the body?
Protecting the germplasm
Why was Mendel named the Father of Genetics?
He used peas as experimental material, which made it easier to recognize characteristic ratios
What was the main observation made by many botanists before Mendel regarding hybrids between species?
Hybrids showed considerable diversity
Which factor made peas advantageous as Mendel's experimental material?
Peas were self-pollinated, producing relatively homozygous starting materials
What did Mendel do to ensure that the strains used in hybridization were true-breeding?
He grew them for two years and selected only those producing progenies resembling them
What approach did Mendel introduce in his experiments?
Quantitative approach involving classification of hybrid progenies and determination of their frequencies
Which of the following best describes Mendel's experimental method?
He focused on a single trait at a time with clear-cut differences
What did Mendel do to validate his theories?
He formulated appropriate experimental tests to validate his theories
What did Mendel demonstrate in his important contribution to genetics?
The appearance of different characters in heredity follows specific laws
What did Mendel show about the gametes produced from hybrids?
They were unchanged descendants of one of the original parental gametes
Why was Mendel's work not immediately appreciated after it was published?
He failed to prove his principles in other plants or animals
What does the history of crops, domestic animals, and microorganisms improvement through selective breeding represent?
A litany of success stories
Which term best describes the reason why Mendel's researches on hawkweed were not successful?
Maternal inheritance
What did Mendel's demonstration of 'discrete units or factors' imply?
There is no blending or dilution of inheritance
Which statement best describes the importance of genetic information in the applied sciences?
It can affect mankind economically, socially, and politically
Why did Mendel's work remain only a reference material for many years?
His chosen plant exhibited maternal inheritance, making his findings less applicable
In what way has selective breeding contributed to the success of the Green Revolution movement?
By providing high yielding and pest-resistant crop varieties
Which field benefits from the advancements in meat production through breeding?
World population's protein needs
What does genetics contribute to in the medical sciences?
Identification of diseases with genetic bases and preventive measures
Why is understanding genetic similarities and differences within the human species important?
It is basic to human understanding and important to human welfare
Test your knowledge on the Theory of Pangenesis, a concept proposed by Charles Darwin, and August Weismann's challenge to it in the 19th century. Explore the inheritance of acquired characteristics and the fundamental mechanisms of evolutionary change.
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