Assume you are studying two different species of plants that have evolved purple flowers. You reconstruct the ancestor of these plants and discover the ancestor plant had pink flowers. You decide to investigate the development of the purple flowers

Segmental duplications play an important role in evolution by a. giving rise to new genes and multigene families. b. keeping the number of genes in a genome constant. c. eliminating repetitive sequences produced by transposition. d. controlling the base content of the genome.

The Neanderthal nuclear genome: A. Shows that Neanderthals inherited their ability to flake stone directly from Homo habilis. B. Is overwhelmingly similar to the modern human genome. C. Demonstrates once and for all that Neanderthals had language. D. Is composed exclusively of mitochondrial DNA. E. Indicates that most Neanderthal females died young, which explains why Neanderthal populations were so small.

What is true about evolution by natural selection? a. It is a largely random process. b. Homology shows that convergence is a useful tool for deducing adaptive function. c. Mothers are invariably members of the same species as their offspring, so selection can never create new species. d. Harmful recessive genes are eliminated more rapidly than harmful dominant genes. e. None of the above is true.

Which of the following is true regarding vestigial traits?   A. Vestigial traits are evidence for change over time   B. Vestigial traits are evidence for common ancestry   C. Vestigial traits indicate that not evolution does not perfect organisms   A and B   A, B, and C

The definition of "lineage" is:   Select one or more: a.   the same as the Tree of Life   b.   a population of organisms captured at one specific time   c.   a series of ancestor and descendant lineages over time   d.   a character that has evolved over time

According to "Our Earliest Ancestors", why can’t scientists just do DNA analysis on these fossil hominins to determine if they are a separate species and possibly what species they belong to?    A.The technology for extracting DNA from fossils hasn't been developed yet. B.Scientists can't perform DNA analysis on fossil hominins because the fossils have been contaminated with modern human DNA over the years, making it impossible to isolate the ancient genetic material. C.The fossils would need to be in a -5 degree Celsius environment to prevent DNA from degrading D.The DNA of fossil hominins is too similar to modern humans, making it difficult to distinguish between them.

3.1

According to "The Complex Evolution of Homo sapiens", what is the significance of the L3 gene and who was the L3 woman?    A.Only individuals within North and South America descended from the L3 woman. B.All individuals within Africa are descended from the L3 woman. C.All individuals outside of Africa and who live in the Old World are descended from the L3 woman. D.All individuals outside of Africa are descended from the L3 woman