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Where do you expect genetic differences between cells to arise from mitosis or from meiosis?
That is a good question. In mitosis, you don't get regular genetic variation but chance mutations can occur. In meiosis with fertilization, you get pairing of DNA from different hosts on a regular basis. I would choose the latter.
What are some similarities in divergent and convergent evolution?
The adaptive traits that arise through convergent evolution are called analogous. These are the same adaptive solutions that arise in different organisms facing very similar environmental challenges and having analogous mutations to come to similar traits through natural selection. Wings in birds, bats and insects are examples of this.
Do variations in populations lead to new species?
Variations in offspring are acted upon by natural selection: some offspring will be slightly more proficient at producing new offspring than others. This means that some alleles will promulgate throughout the population gene pool at a faster rate than others, resulting in a shifting frequency of incidence in the population gene pool. This is what evolution is: shifting allele frequencies in the population gene pool.
How is the punctuated equilibrium a better model for dealing with gaps and missing links in fossil records?
Answer: The late evolutionary professor of Palaeontology Stephen Jay Gould, proposed an evolutionary theory called 'punctuated equilibrium' to explain the evidence he found in the fossil record. His theory essentially meant that evolution proceeded by 'jumps' rather than gradually as Darwin proposed.The evidence was the fact (still the case today), that the many intermediate forms that are required by evolution to proceed in the standard Darwinian manner just do not exist. Gould once stated that 'The extreme rarity of transitional forms in the fossil record persists as the trade secret of paleontology. The evolutionary trees that adorn our textbooks have data only at the tips and nodes of their branches … in any local area, a species does not arise gradually by the gradual transformation of its ancestors; it appears all at once and "fully formed." (Stephen Jay Gould, Evolution's erratic pace, Natural History 86(5):14, May 1977.)The idea was that these 'jumps' occurred in small isolated populations which were thus not as likely to be fossilised. Thus Gould together with Niles Eldredge, explained the large, seemingly unbridgeable gaps in the fossil record, the study of which he was an expert.
Which one of the scientists challenged the theory of spontaneous generation with the concept of biogensis which claims that living cells can arise only from preexisting living cells?
Francesco Redi
Which type of evolution requires speciation?
Speciation is the evolutionary process by which new biological species arise.
How do biogeographic observations suggest that a modification process caused a new species to arise?
Biogeographic observations indeed suggest that a evolutionary process caused new species to arise, through the process we call natural selection. This is due to an animals adaptability in it's environment.
What are the advantages of the one party?
There no advantages of one party rule. When other political parties are outlawed or new ones forbidden to arise, history has shown these situations to be disasters.
What are some advantages of using Providian Visa?
There a number of different advantages that arise when one decides to use Providian Visa such as secure transactions and balance updates whenever needed.
Why did humans Arise in Africa?
For those of you who accept the evolutionary explanations of biology, the reason why the human species, H. sapiens, arose in Africa, is that there was a series of other hominid species such as Australopithecus Afarensis who created the necessary evolutionary sequence. You might then ask why any hominids were in Africa, rather than some other continent. It is true that the forests of Africa are a suitable habitat for hominids, but the difference between Africa and South America, for example, is not that great. The appearance of hominids in Africa was essentially an accident of evolutionary history. Hominids did nothaveto arise in Africa, but they did.
What term is used to indicate a relatively new characteristic in an evolutionary sense?
The term used to indicate a relatively new characteristic in an evolutionary sense is "derived trait" or "apomorphy." These traits are distinct from ancestral characteristics and arise as species evolve, helping to differentiate them from their predecessors. Derived traits are often used in the context of phylogenetic analysis to understand evolutionary relationships among organisms.
What are some of the advantages and disadvantage of speaking?
Advantages of speaking include effective communication, building relationships, and conveying emotions and thoughts. Disadvantages may include miscommunication, misunderstandings, and the potential for conflicts to arise.
Is Spontaneous generation is the evolutionary history of an organism?
No, spontaneous generation is a disproven idea that suggested living organisms could arise from non-living matter. Evolutionary history refers to the changes in species over time through processes like natural selection. These are distinct concepts in biology.
which term describes the process of making an economic decision by considering both the advantages and the problems that might arise from the decision?
Cost-benefits analysis
What are three characteristics of a cladistic analysis?
cladistic analysis identifies and considers only those charateristics of organisms that are evolutionary innovations cladistic analysis identifies and considers only those charateristics of organisms that are evolutionary innovations
How do the different types of systems in the body work mammal?
Different systems in the body of mammals work under the control and coordination of Nervous system of body. It is an evolutionary phenomenon which arise due to multicellularity in animals.
Advantages and disadvantages of the just in time policy?
Advantages: Just-in-time delivery lowers costs and increases efficiency by greatly reducing or eliminating the need for storage. Disadvantages: There can arise unexpected delivery hangups that cause a loss in sales.
