Linnaeus and other early scientists classified organisms based on visible traits. Today, scientists generally use cladograms based on DNA and other evolutionary evidence to classify organisms. Why have most scientists changed their method of classification?
a) DNA evidence supports the idea that species that look similar are always more closely related than species that do not
b) cladograms are relatively small and the information in them is easy to manage
c) cladograms can compare more animals at one time than traditional classification methods
d) DNA evidence often shows that species that share characteristics but look different can be more closely related than species that look alike
Ans: d) DNA evidence often shows that species that share characteristics but look different can be more closely related than species that look alike
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A. codominance B. homozygous recessive C. pleiotropy D. incomplete dominance
Which statement concerning the auxin F-box protein is false?
a. It is located in the nucleus. b. It is a type of receptor. c. It is involved in catalyzing the addition of ubiquitin tags. d. Plants have about 700 of these. e. An example is the transport inhibitor response 1 protein.
What protein influences the ability of RNA polymerase to transcribe genes?
A. snRNPs B. DNA polymerases C. DNA helicases D. tRNA E. transcription factors
The transcription factor called SHORT ROOT is involved in the specialization of root cells into what type of tissue?
A. cortex B. epidermis C. pericyte D. endodermis