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100
Gregor Hendel
It took him eight years and more than 10,000 pea plants to discover the laws of inheritance.
100
1962
When did Dr's. Watson, Crick and Wilkins receive the Nobel Prize in Physiology or Medicine for solving the structure of DNA?
100
1978
In which year was the first test-tube baby born?
100
Prophase
When does crossover take place in meiosis
100
sister chromatids separate during anaphase
Meiosis II is similar to mitosis in that...
200
Linus Pauling
Even though he added an extra strand to the structure of DNA, he ultimately won two Nobel Prizes: the Nobel Prize in Chemistry and the Nobel Peace Prize
200
David Baltimore
This scientist found that some viruses have an RNA-dependent DNA polymerase that was later named “reverse transcriptase.” He was one of three who shared in the 1975 Nobel Prize in Physiology or Medicine.
200
Friedrich Miescher
I first isolated DNA using pus collected from bandages at a local hospital. Since white blood cells are a major component of pus, they were my source of DNA. Yuck!
200
Telophase
During which phase of meiosis does the nuclear membrane reform around chromosomes?
200
homologues line up in meiosis I and duplicated chromosomes line up in meiosis II
Metaphase of meiosis I and meiosis II differ in that...
300
Frederick Sanger
This scientist won two Nobel Prizes in Chemistry: one for his work on the structure of protein and another for work on the determination of base sequences in nucleic acids. Quite a sequence of events! Frederick Sanger
300
GeneChip
Even though he had worked on a potato farm, Steve Fodor’s work led to the development of this kind of chip (you can’t eat it!).
300
Thomas Hunt Morgan
The “fly room” at Columbia University was established through my efforts. Imagine working in a room filled with bottle after bottle of fruit flies!
300
Interphase
During which phase of the meiotic cell cycle does DNA replication occur?
300
Mitosis
Asexually reproducing organisms produce offspring that are genetically identical to each other and to the parents. What type of cell division are the offspring a product of?
400
Martha Chase and Alfred hershey
These scientists used a common kitchen appliance to help show that phage DNA carries instructions to make new phage particles. Thinking of making a milkshake?
400
The human Genome Prodject
J. Craig Venter’s company, Celera Genomics, worked on this very important project.
400
Christiane Nusslein-Volhard and Eric Wieschaus
We worked together to demonstrate how genes work during development to change a single egg cell into a complex organism. Follow our experiment and find out what the names of the stages are that a fruit fly goes through when maturing from a fertilized egg to an adult.
400
a sperm
A human cell containing 22 autosomes and a Y chromosome is...
400
anaphase ll
At which stage of meiosis do chromatids separate and become daughter chromosomes?
500
Barbara McClintock
Next time you’re munching away at the movies, think of this Nobel-Prize winning scientist who figured out the process of transposition in corn chromosomes.
500
Density gradient centrifugation
Meselson and Stahl invented this new technique in their quest to prove that DNA replication is semiconservative.
500
Thomas R. Cech
I showed that RNA could act as its own catalyst. Because of my work, it is no longer correct to state, “all enzymes are proteins”.
500
Meiosis
Homologous chromosomes move towards opposite poles of a dividing cell during...
500
Meiosis
The process in which haploid gametes are formed in diploid organisms is called