Barbara McClintock: Great Minds

Barbara McClintock, a pioneering scientist in cytogenetics, made groundbreaking discoveries about the physical location of genes on chromosomes and the process of chromosome crossover. Her work on Indian corn led to the discovery of transposable elements, or jumping genes, which are crucial for genetic mutations. Despite facing ridicule and lack of recognition in her time, McClintock's contributions were eventually acknowledged, earning her a Nobel Prize in Physiology or Medicine.

Who was the first to demonstrate that genes are located on chromosomes?

• Barbara McClintock

• Rosalind Franklin

• Francis Crick

• James Watson

What did Barbara McClintock discover about the color patterns in Indian corn?

• They were random mutations

• They were a result of selective breeding

• They were caused by environmental factors

• They were due to transposable elements

What are transposable elements also known as?

• Stable elements

• Fixed sequences

• Jumping genes

• Static genes

Why did Barbara McClintock stop publishing her research for a period?

• Her work was widely accepted

• Her ideas were ridiculed

• She lost interest in genetics

• She retired from science

In which year did Barbara McClintock receive the Nobel Prize for her discovery?

• 1951

• 1990

• 1983

• 1970