1.
Scientists use this type of data in order to classify organisms?
DNA and amino acids
embryology
homologous structures
all of the above
All of the above.
2.
_____ are the broadest, most inclusive taxon in our present day classification system
kingdom
domain
phylum
species
Domain.
3.
The organisms in this domain are more complex and have a nucleus and membrane-bound organelles
Eukarya
Archaea
Bacteria
Eukarya.
4.
Organisms in this Domain live in harsh environments; may represent the first cells to have evolved.
Eukarya
Archaea
Bacteria
Archaea.
5.
All of the following are in the Domain Eukarya EXCEPT:
animals
plants
bacteria
protists
Bacteria.
To determine and classify organisms, scientists utilize various types of data. These three major categories of data play a crucial role in the classification process:
1. DNA and Amino Acids: The DNA sequences and amino acid composition provide genetic information about organisms. By comparing and analyzing these sequences, scientists can determine the similarities and differences between species. DNA and amino acid analysis help identify evolutionary relationships and construct phylogenetic trees.
2. Embryology: The study of embryonic development allows scientists to examine and compare the early stages of organisms' growth. By observing and comparing these developmental stages, scientists can identify similarities and differences in the developmental patterns of different species. This information contributes to the classification and understanding of evolutionary relationships.
3. Homologous Structures: Homologous structures are anatomical features found in different organisms that share a common evolutionary origin but may have different functions. Scientists examine these structures to identify similarities and differences between species, pointing towards shared ancestry. By comparing homologous structures, scientists can classify organisms based on their evolutionary relationships.
In conclusion, scientists use a combination of DNA and amino acid analysis, embryology, and the study of homologous structures to classify organisms accurately.