1. Introduction to Genetics

In the context of the RNA world hypothesis about the origin of life, which molecule is proposed to have evolved first as both a carrier of genetic information and a catalyst?

Why did Thomas Hunt Morgan choose Drosophila melanogaster (fruit flies) for his genetics experiments?

In the history of genetics, who is most commonly considered the father of heredity based on pioneering experiments with pea plants?

Which British scientist helped solve the structure of DNA by producing key X-ray diffraction images?

In the context of the history of genetics, what is the term for the ancestor who stands at the top of a common genealogy?

During Gregor Mendel's time in the mid-19th century, what was the scientific understanding of genes and chromosomes?

Who was responsible for the initial base pairing experiment that provided key evidence for the structure of DNA?

Which of the following statements about Bill Nye's contributions to the field of genetics is correct?

In the history of genetics, who is credited (along with a collaborator) with creating the first accurate double-helix model of DNA in 1953?

In the history of genetics, the first strands of DNA were directly observed using which type of microscope?

In the history of genetics, who developed the Punnett square to predict the outcome of genetic crosses?

In the history of genetics, who is most widely credited with first identifying DNA as a distinct chemical substance (then called “nuclein”) in 1869?

Why did Thomas Hunt Morgan choose fruit flies (Drosophila melanogaster) for his genetic studies?

Which of the following is most widely considered to have been the first genetic material on Earth?