Scientists Timeline

Question 1

(1822-1884)
- responsible for the laws governing inheritance of traits
- Father of Genetics
- Developed the Law of Inheritance

In 1866 he discovered recessive & dominant traits

Answer 1

Gregor Johann Mendel

Question 2

1869
- “NUCLEIN” later known as DNA

Answer 2

Friedrich Miescher

Question 3

1881
- renamed Nuclein into “Nucleic Acid”
which is later officially known as “DNA”

Answer 3

Albrecht Kossel

Question 4

2 groups of Nucleic Acid

Answer 4

DNA & RNA

Question 5

Nucleotide is composed of 3 substances

Answer 5

phosphate
sugar
nitrogenous base/s

Question 6

1882
- specialized in the study of chromosomes
- MITOSIS (cytology)

Answer 6

Walter Flemming

Question 7

Early 1980
- the chromosomal theory of inheritance

Answer 7

Theodor Beveri & Walter Sutton

Question 8

1902
- opened the door to understanding GENETIC DISORDERS

Answer 8

Archibal Gorrad

Question 9

1944
- 1st to outline DNA as the transforming molecule/principle

Answer 9

Oswal Avery

Question 10

1944 - 1950
- discovered
- developed CHARGAFF RULES

Answer 10

Erwin Chargaff

Question 11

Chargaff rules

Answer 11

A-T
G-C
T-A
C-G
A-U

Question 12

Late 1940
- “genes move” in a chromosome

Answer 12

Barbara McClintok

Question 13

1951
- used x-rays to capture DNA
(Crystallography)

Answer 13

Rosalind Franklin

Question 14

1953
- concluded DNA is double helix

Answer 14

James Watson & Francis Crick

Question 15

• a PARTICLE inside the nucleus of every eukaryotic
• plays an important function in the human body
• INFORMATION MOLECULE that stores info needed to synthesize or make proteins for traits to pass generation to generation

Answer 15

Deoxyribonucleic acid

Question 16

The form DNA becomes in the nucleus

Answer 16

Chromosome/s