A common definition goes something like: A lamiated rock formed by the growth of blue-green algae (i.e., cyanobacteria)".
This definition is, in fact, such a gross oversimplification as be scientifically useless.
In fact, many people, encouraged by advertising, take these tests with the hope that the test will in fact provide them with the answer to the question, “Who am I?
” or to confirm a specific ancestor or ancestral heritage rumor.
Peaks on the landscape correspond to genotypic frequencies at which the average fitness is high, valleys to genotypic frequencies at which the average fitness is low. adaptive logic: A behavior has adaptive logic if it tends to increase the number of offspring that an individual contributes to the next and following generations.
If such a behavior is even partly genetically determined, it will tend to become widespread in the population.
Stromatolites are not only Earth's oldest of fossils, but are intriguing in that they are our singular visual portal (except for phylogenetic determination of conserved nucleic acid sequences and some subtle molecular fossils) into deep time on earth, the emergence of life, and the evolving of the beautiful forms of life of modern time.
A small piece of stromatolites encodes biological activity perhaps spanning thousands of years.
Some aren’t even close to each other, let alone to my known and proven genealogy.Looking at the size of these regions, and the movement of populations, we can certainly understand why.In many ways, it’s like trying to discern the difference between Indiana and Illinois. While the question of which test is best seems like it would be easy to answer, it isn’t.Also used to describe the process of genetic change within a population, as influenced by natural selection.adaptive landscape: A graph of the average fitness of a population in relation to the frequencies of genotypes in it.