Scientists sometimes use gene sequencing to establish a family tree. A family tree shows the evolutionary relationship between various species. The fewer the differences that are present in the genetic makeup between two species, the closer their evolutionary relationship. What type of evidence does gene sequencing represent?
A) comparative embryology
B) identification of a common ancestor
C) molecular biology
D) comparative anatomy
Ans: C) molecular biology
You might also like to view...
In what/which domain(s) of life is/are microorganisms represented?
A) Archaea B) Bacteria C) Eukarya D) Archaea, Bacteria, and Eukarya
What is the correct order of the Linnaean system of classification, starting with the most general category?
A. genus, order, class, phylum B. kingdom, class, phylum, species C. domain, kingdom, phylum, class D. domain, phylum, class, kingdom
The slight negative charge at one end of one water molecule is attracted to the slight positive charge of another water molecule. What is this attraction called?
A) a covalent bond B) a hydrophilic bond C) a van der Waals interaction D) a hydrogen bond E) an ionic bond
What is a problem with applying the phenetic species concept?
a. One must construct a phylogenetic tree. b. Character weighting is ambiguous. c. Gene flow must be measured. d. The concept only works with sexual species.