Evolutionary theory predicts that species are related, not independent. Four of the following examples provide support for this prediction, but one is irrelevant. Which of examples listed below does not support the claim that species are related? O A. Many dinosaurs and other organisms went extinct following a huge asteroid impact at the end of the Cretaceous. O B. All prokaryotes and eukaryotes use DNA to carry their genetic information. O C. Before synthetic insulin was available, diabetics used injections of purified pig insulin to manage their disease. O D. Ground squirrel species found on the North and South sides of the Grand Canyon are very similar to each other. O E. The endostyle of lancelets (invertebrate chordates) and the thyroid gland of vertebrates develop similarly, and both produce iodinated proteins.

Here is the question: What was the likely source of the raw material incorporated into the first life forms? I believe it is carbon, but I don't know why it is carbon. What I mean is, why is carbon considered the thing that makes something alive? Why are eukaryotes and prokaryotes simply considered alive just because they have carbon. Would that mean that carbon is alive because carbon has carbon? I would appreciate an anwser because I'm really trying to understand everything I run across. I love educating myself and I'm on a quest for knowledge. Thanks guys!

Which of the following is most likely to be true of two modern organisms that have a distant evolutionary relationship? a. They should have fewer homologous traits in common than two more closely related organisms b. They should have very similar chromosomes Oc. They live in very different habitats d. They should be members of the same genus e. They should have a relatively recent common ancestor*

an actin gene in humans is 92 identical to the homologous actin gene in mice. An actin gene in human is 80% identical to the homologous gene in yeast. what does this say about how long ago those organism has a common ancestor?

All living things are divided into three domains: bacteria, archaea, and eukarya. They have several traits that are specific to each domain or shared across the domains.   Based on this information, what traits would the last universal common ancestor (LUCA) be expected to have? A. Nuclear envelope, introns in genes, and peptidoglycan in cell walls.   B. Histones associated with DNA, circular chromosome, and peptidoglycan in cell walls.   C. Unbranched hydrocarbons in membrane lipids, histones associated with DNA, and introns in genes.   D. Circular chromosome, unbranched hydrocarbons in membrane lipids, and one kind of RNA polymerase.

Which of the following is TRUE about a phylogenetic tree? It provides a drawing the reflects the proven relationships between living and extinct species. b It provides a hypothetical model of the relationships between extinct species. c It provides a hypothetical model of the relationships between living and extinct species. d It a diagram used by scientists that provides a model of evolutionary relationships without the need for scientific data.

In lecture, we discussed the endosymbiont theory that describes the evolutionary origins of mitochondria and chloroplast. A few scientists think that peroxisomes also have an endosymbiotic evolutionary origin, although most scientists disagree with this hypothesis. Which of the following hypothetical discoveries would provide support for the hypothesis that peroxisomes evolved from bacteria? Discovering that eukaryotic cells cannot live without peroxisomes. All of these hypothetical discoveries would provide support for the hypothesis that peroxisomes have an endosymbiotic evolutionary origin. Identifying the presence of DNA within peroxisomes. Determining that the majority of proteins in peroxisomes have eukaryotic origin.