They probably have a recent common ancestor
It has pairs of matching chromosomes.
Charles Darwin's wrote two books the first was called Charles Darwin's theory of evolution and the second was Charles Darwin's the origin of mammal
Evolution is always happening. Species are constantly changing to adapt to their surroundings. If evolution wasn't always happening, many different species would have died.
It depends first on the context and definition of the terms "evolution" and "progress(ive)". The term evolution may be used in many different contexts; such as the evolution of species, or the evolution of technology. And the term progressive may have more than one meaning; such as implying some form of improvement over time, or merely implying non-stasis.Colloquially, the term evolution may refer to progress in terms of improvement. We might say, for example, that the rapid evolution of technology has led to great improvement in the quality of life. However, the same is not true when the terms are applied to science.Biological evolution, for example, describes how populations diverge, adapt, and differentiate over time resulting in new species. We might say that evolution progresses because it is not static, or because information is being added to the genomes of species over time; but not because there was any quantifiable improvement.
Divergent evolution:)
The evolution of numerous species, such as Darwin's finches from a single ancestor is called adaptive radiation.
They probably have a recent common ancestor
Through evolution the population of the species was growing.Through evolution the population of the species was growing.Through evolution the population of the species was growing.Through evolution the population of the species was growing.Through evolution the population of the species was growing.Through evolution the population of the species was growing.Through evolution the population of the species was growing.Through evolution the population of the species was growing.Through evolution the population of the species was growing.Through evolution the population of the species was growing.Through evolution the population of the species was growing.
This is an occurrence of co-evolution of the two species.
converged evolution
Evolution is sometimes described as macro-evolution, which is the long-term evolution of an entire new species, and micro-evolution, which is largely to do with less significant evolutionary changes within a species. Many creationists accept the existence of micro-evolution, but say that macro-evolution does not occur.
That is co-evolution.
Analogous evolution. Convergent evolution.
Because that is how evolution works. If one species adapts, it can eventually become so different as to be unrecognisable for what it was (given enough time). recent common ansester
the formation of species
Through evolution. There are two main kinds of evolution which are gradualism and punctuated equilibrium. In gradualism, natural selection slowly removes unfavorable traits for the environment that the species is living in. After many years the different habitats will result in two species. This same theory is true for punctuated equilibrium except that in p.e. there is a sudden burst of change followed by a dormant state of evolution for the species.
Co-evolution
Convergent evolution may be the words you seek. This often happens when different species have to adapt to a similar environment. An example would be the similar body shape, and the shape of appendages; of both fish and of marine mammals.