SCIN130 Chapter 16 Exam Questions and Answers 100% Pass

SCIN130 Chapter 16 Exam Questions and Answers 100% Pass Which of the following is/are an example(s) of a postzygotic isolating mechanism? - Answer-Hybrid sterility Zygote mortality Two different species attempt to reproduce, but their offspring is unable to undergo proper mitosis because it has two different sets of chromosomes. This type of reproductive barrier is best described as __________ mortality. -Answer-zygote The evolutionary history of a group of organisms is called _____. -Answer-phylogeny When a horse and a donkey are mated, their offspring, a mule, is typically sterile. This is an example of which of the following? -Answer-Hybrid sterility Some species appear suddenly in the fossil record and remain morphologically the same until they go extinct. Based on this, paleontologists have developed the _____ equilibrium model. -Answer-punctuated The model of evolution that describes the process as slow and continuous is called the _____ model. -Answer-gradualistic ____ evolution occurs when two species evolve similar traits due to adaptation to their environment, even though they are not related to each other. -Answer-Convergent Similarity due to convergent evolution is called what? -Answer-Analogy A phylogenetic tree is a visual representation of which of the following? -Answer- Common ancestors and divergent lines of species During the course of evolution, when the process of speciation produces many new species from a single ancestral species, this is called adaptive _____. -Answer-radiation The process of speciation that involves a geographic barrier is called ____ speciation. - Answer-allopatric Which of the following evidences led to the five-kingdom system being abandoned in favor of the three-domain system? -Answer-comparison of rRNA cellular data ____ is the study of living organisms that relies on a combination of data from the fossil record, comparative anatomy and development, and molecular data. -Answer- Systematics Species with more DNA similarities are -Answer-more closely related Which of the following are evidence of the mass extinction of the Cretaceous period having been caused when a meteorite crashed into the Earth? -Answer-Abnormally high levels of iridium in Cretaceous clay samples A huge crater found in the Caribbean-Gulf of Mexico region Anatomical or physiological differences between two species that prevent successful reproduction after mating has taken place are called ____ isolating mechanisms. - Answer-postzygotic A(n) ____ ancestor is one that has given rise to two or more lines of descent. -Answer- common