by Callie Oliver | Jan 4, 2019
(MS.LS4A.b) Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.
by Callie Oliver | Jan 4, 2019
(MS.LS4A.a) The collection of fossils and their placement in chronological order (e.g., through the location of the sedimentary layers in which they are found or through radioactive dating) is known as the fossil record. It documents the existence, diversity,...
by Callie Oliver | Jan 4, 2019
(MS.LS3B.b) In addition to variations that arise from sexual reproduction, genetic information can be altered because of mutations. Though rare, mutations may result in changes to the structure and function of proteins. Some changes are beneficial, others harmful, and...
by Callie Oliver | Jan 4, 2019
(MS.LS3A.b) Changes (mutations) to genes can result in changes to proteins, which can affect the structures and functions of the organism and thereby change traits.
by Callie Oliver | Jan 4, 2019
(MS.LS3A.a) Genes are located in the chromosomes of cells, with each chromosome pair containing two variants (alleles) of each of many distinct genes. Each distinct gene chiefly controls the production of specific proteins, which in turn affects the traits of the...
