Richard H. Ebright is an American molecular biologist known for his early work studying monarch butterfly migration and cell development. As a child, he had a keen interest in collecting butterflies and conducted research tagging monarchs to study their migration patterns. At age 24, he published a seminal theory demonstrating that gold spots on monarch pupae produce hormones necessary for the butterflies' development. This early work established Ebright as a pioneering scientist and he continues his distinguished career today as a professor studying DNA and genetics.

1. RICHARD. H .
EBRIGHT
By saksham
gupta

2. Outline
•Who is
Richard.H.Ebright?
•His interest
•His inventions
• His achievements

3. American molecular biologist. He is Board
of Governors Professor of Chemistry and
Chemical Biology at Rutgers University and
Laboratory Director at the Waksman
Institute of Microbiology

4. This is the story of a young and
bright scientist named Richard H.
Ebright.
He grew up north of Reading,
Pennsylvania.
At the age of 24 he excited the
scientific world with his theory of
cells.
The Making of a
Scientist

5. The role of his mother
She is a great driving force in
making of him as a scientist
She always encouraged him &
developed his interest in learning
 She took him on trips
 She bought him telescope,
microscopes, cameras, mounting
materials etc.
She got him the book ‘The
Travels of Monarch X’ which

6. Early Childhood
Talent
By the time he was in
second grade , he had
collected all the
twenty five species of
the butterflies found
around his home town

7. The Travels of Monarch X
The book is about how butterflies
migrate to Central America.
It was written by Dr. Frederick
Urquhart of the University of
Toronto, Canada.
Readers were invited to help study
butterfly migration.
He also asked readers to tag
them for research.
This book opened a world of

8. His theory on the life of cells
He tried to find out the purpose
of the twelve tiny gold spots on a
monarch pupa.
Earlier it was assumed that they
were just ornamental.
But later Ebright , along with his
fellow students, showed that the
spots were producing a hormone
necessary for their full
development.

9. In his senior year, he grew
cells from a monarch’s wings in
a culture and showed that the
cells would divide and develop
into normal butterfly wing
scales only if they were fed
the hormones from the gold
spots.
This project won him the first
Further Achievements

10. He studied the photos of the
chemical structure of a hormone
in the X-ray.
This photo solved his doubt on
DNA.
He determined that the DNA is
the substance in the nucleus that
controls heredity.
X-ray photos of chemical structure of a hormone

13. Interest
He had a keen interest in
collecting butterflies.
He had also become a champion
debator and public speaker and
a good canoiest
He was an expert photographer

14. Monarchs
 Monarchs are large, beautifully colored
butterflies that are easy to recognize by
their striking orange, black, and white
markings.
 They live in North, Central, and South
America as well as Australia, some Pacific
Islands, India, and Western Europe

15. Viceroy
 Viceroy is a large, bright orange
butterfly with black lines and white
spots on the wings.
 Viceroy mimics the
poisonous Monarch (Danaus plexippus).

16. Why viceroy butterflies copy monarchs?
They are the food of birds.
Viceroys taste good whereas
monarchs do not taste good for
birds.
The viceroys look like monarchs
because they want to trick the
birds and save themselves.
This project was placed first in

17. MORPHO

18. COSTA RICA

19. Woodland Skipper

20. HACKBERRY

21. BUCKEYE