Evolution

That is known as natural selection, a key mechanism in the theory of evolution. Organisms that are better adapted to their environment are more likely to survive and reproduce, passing on their advantageous traits to future generations.

True. Darwin's theory of evolution emphasized the concept of common ancestry and drove biologists to consider evolutionary relationships when classifying organisms. This led to the development of the modern classification system based on evolutionary principles.

Variations in a species are needed for natural selection to occur because they provide the raw material for evolutionary change. Without variation, there would be no differences for natural selection to act upon, and individuals within a species would be identical. Variations allow some individuals to be better adapted to their environment, giving them a higher chance of survival and reproduction, thus driving the process of natural selection.

The environment plays a significant role in convergent evolution by selecting for similar traits in unrelated species that enable them to adapt to similar environmental pressures. Similar environments can lead to the evolution of similar features in separate lineages, even if they are not closely related. This process highlights the importance of natural selection in shaping the adaptations of species in response to their environment.

Paleontology, evolutionary biology, molecular cell biology, biochemistry, geology, genetics, biogeography, evolutionary development and so on and so on. The evidence is there in massive amounts.

talkorigins.org

To start your search. Many links there. NCSE ( National Center For Science Education ) is also a good source.

No. Some variations are detrimental and that is what natural selection selects on; the beneficial variation in the immediate environment survives and is reproductively successful, driving genes into the gene pool. The detrimental variation is culled and has lesser representation in the gene pool unto disappearance.

First of all, there is no 'twin gene' as such. The only genetic link to twinning is that of hyper-ovulation, in which the mother releases more than one egg at a time. If women in a particular family have the gene for hyper-ovulation then this will increase their chances of having dizygotic (non-identical) twins. There is no link between genes and identical twinning.

There is no scientific evidence to show that twins are more likely to skip a generation, although if hyper-ovulation runs in a family then it is more likely that twinning will occur across the different generations.

it could allow a species to forcefully adapt to the new given climate and evolve into a different species

Microevolution is not part of macroevolution. Microevolution involves small-scale changes within a species over a shorter period of time, while macroevolution involves larger scale changes that lead to the formation of new species over a longer period of time.

Yes, microevolution, which consists of small changes in allele frequencies within a population, can accumulate over time to bring about macroevolutionary changes such as the emergence of new species. This process occurs through mechanisms like genetic drift, natural selection, and gene flow.

Whatever physical attributes are most useful in the current environment. For instance if there was a group of rabbits, the fastest would avoid predators best, if it then mated with another fast rabbit the baby rabbits would all grow up to be faster.

Edwin Darwin did not propose a separate theory on evolution. The theory of evolution is commonly attributed to Charles Darwin, who put forth the concept of natural selection as the mechanism driving evolution. Edwin Darwin does not have a notable theory associated with evolution.

Charles Darwin's theory of evolution is considered a scientific theory because it is a well-substantiated explanation of natural phenomena based on evidence gathered through observation and experimentation. It has undergone rigorous testing and has been supported by a wide range of scientific disciplines, making it a foundational concept in biology.

Lysosome contain digestive enzymes for almost all type of organic material. If their covering membrane breaks as it happens during injury to cell, the digestive enzymes will spill over cell content and digest the same. As lysosomes are organelles which on bursting can kill cells possessing them ,they are called suicide bags.

The theory of evolution was proposed by Charles Darwin in his book "On the Origin of Species" published in 1859. Darwin's theory suggests that species evolve over time through the process of natural selection.

Isolation or reproductive barrier is necessary in the formation of a new species. This can occur through geographical isolation, behavioral differences, or genetic mutations that prevent interbreeding between populations.

Without variation there is nothing to select for against the background of an immediate environment and thus no evolution as alleles, not selected for, would not change over time in this population of organisms.

Without variation the environment can change quickly and send your population to extinction if there were no variants that could meet this challenge.

Jean-Baptiste Lamarck proposed the theory of the inheritance of acquired characteristics, which suggests that the use or disuse of an organ could lead to changes in that organ that are then passed on to the offspring. This theory was later found to be inaccurate in light of modern genetics and the principle of inheritance through DNA.

Some have thought so because natural selection was seen to reduce variation by culling unsuccessful phenotypes so that alleles did not change over time in populations. This is no longer thought as much as the rates of mutation are better understood and known to outpace natural selection and that adaptive change can accommodate more than one successful phenotype so that many allels can be fixed in populations gene pools.

A kidney stone is a hard deposit of minerals and salts that forms in the kidneys. It can be very painful as it passes through the urinary tract. Drinking plenty of water and making dietary changes can help prevent their formation.

Evolution is more of a tree. For example, humans are not descended from the monkeys you or I would see today, nor did they somehow turn into humans. Instead, modern monkeys and humans share a common ancestor that eventually split into several different species. Another argument sometimes heard is, "If humans came from monkeys, why are there still monkeys around?" This is because there was no linear progression of monkeys towards humans. A small group of ancient monkeys gathered more and more mutations until they were different enough from the original monkeys to be considered a different species. Note that no where in this example did the original species disappear; they still lived on while a few changed.

Sexual selection is driven by competition for mates and the preferences of individuals for certain traits that increase reproductive success. This can include physical characteristics that indicate good genes or social status, as well as behaviors that demonstrate fitness or compatibility. Ultimately, sexual selection is a mechanism that shapes the evolution of species by influencing which individuals are successful in reproducing.

There is no " ultimate outcome " of evolution. Evolution just is the change in allele frequency over time in a population of organisms. It has no direction, it is not progressive, does not plan for the future, is not linear and it does not know what it wants. Such as " ultimate outcomes. "

An evolutionary path refers to the series of changes and adaptations that an organism undergoes over time as it evolves to better suit its environment. This includes genetic mutations and natural selection that drive the development of new traits and species.