Question

Carl Woese The Scientist behind A New Domain of Life Did all living things on planet Earth evolve from one common ancestor? This is a big question 1)............... Carl Woese, an American microbiologist and biophysicist, was curious to answer. However, his research into the subject led 2)............... the discovery of far more than just an answer to this question. Woese was born in New York in the USA on 15th July, 1928. He was fascinated by science from a very young age and wanted to become a scientist. He gained a degree in Mathematics and Physics at Amherst College in Massachusetts and had 3)............... interest in Biology at that time. However, one of Woese's college professors recommended he studied biophysics, so just three years later, aged 24, he graduated with a PhD in Biophysics. Woese continued his education by studying medicine and carrying 4)................. research into bacteria, viruses and genetics. He was very interested in the work done 5)........... two scientists called Linus Pauling and Emile Zuckerkandl who investigated evolution and genetics based on the DNA and RNA of organisms. At that time, there wasn't an experimental method 6)........ answer this question. But, this didn't stop Woese - in fact, he created his own. He realised that by analysing and comparing K​

Answer 1

Ответ:

1. that
2. to
3. no
4. out
5. by
6. to

Объяснение:

Надеюсь все правильно, удачи в учебе.

Answer 2

the genetic material (DNA and RNA) of different organisms, he could gain insights into their evolutionary relationships.

With this approach in mind, Woese focused his research on a specific molecule called ribosomal RNA (rRNA). He recognized that rRNA is present in all living organisms and plays a crucial role in protein synthesis. By comparing the sequences of rRNA from different organisms, Woese could determine how closely related they were.

Woese's groundbreaking discovery came in the 1970s when he analyzed the rRNA sequences of a variety of microorganisms, including bacteria and archaea. Archaea were relatively unknown at the time and were often classified as bacteria due to their similar appearance and biological functions.

However, Woese's genetic analysis revealed that archaea were fundamentally different from bacteria and actually constituted a separate domain of life. He proposed the term "archaea" to describe this new domain, distinct from both bacteria and eukaryotes (which include all multicellular organisms, as well as some single-celled organisms with a nucleus).

This discovery had a profound impact on our understanding of the evolutionary history of life on Earth. Woese's research showed that all organisms could be categorized into three distinct domains: bacteria, archaea, and eukaryotes. Furthermore, it provided evidence for the existence of a common ancestor for all life forms.

Woese's work revolutionized the field of evolutionary biology and led to a reclassification of the tree of life. It also highlighted the importance of studying rRNA and other genetic material in understanding the relationships between different organisms.

In summary, Carl Woese's research into the evolutionary relationships of living organisms led to the discovery of a new domain of life, archaea. His analysis of rRNA sequences provided evidence for a common ancestor for all living things and reshaped our understanding of the tree of life. His work continues to have a lasting impact on the field of biology.