Dec 13, 2010 · Hence, the emergence of new breeds of dogs as a result of artificial selection does not constitute an example of macroevolution. On the other hand, answers A through D all constitute changes occurring at or above the species level. E . The evolution of domestic dogs , ranging from chihuahuas to Great Danes . 2.
Macroevolution is major evolutionary change that occurs above the species level. For example, it includes the evolution of plant reproduction from spores to seeds and the movement of animals from sea to land creatures. There are multiple sources of evidence to support macroevolutionary processes. One important line of evidence is the fossil record, all of the fossilized artifacts …
Mar 05, 2019 · Macroevolution involves evolution at or above the species level. This includes the evolution of individual species as well as whole taxonomic groups over long periods of time. They are not changes confined to any one species. For example, at some point in time, chlorophyll-containing plant cells left Earth's seas and moved onto the land.
Macroevolution (large-scale evolutionary change) occurs in defined patterns, including stasis, speciation, lineage character change, and extinction (a loss of all members of a particular group). The patterns may be the result of environmental changes, such as an ice age or an increase in predation, the preying of one animal upon others.
The evolution of life on Earth began with protocells, which evolved over time into the first prokaryotes.
Prokaryotes and eukaryotes are the two main groups of living organisms.
The big idea behind macroevolution is that of common descent, the proposition that all life descends from a single ancestor. Microevolution means with changes on the small scale, to include changes in the frequency of individual alleles within species and populations. 2.
Macroevolution is concerned with evolution on the grand scale, with the branching out of new species and larger groups, like families and phyla. The question is whether there are distinct events and phenomena that control evolution on this scale.
A DNA-based taxonomy that highly depends in the variability of the chosen DNA marker and in the chosen threshold of genetic divergence between two species. The more conserved a DNA sequence is, the less species will be recognized, the higher variable a DNA sequence, the higher the species counts. 3.
Explain Theoretically, the answer is yes. If you do not count extinction as evolutionary change within a lineage. In a sense, if a lineage becomes extinct then this precludes further change in that lineage.