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Evolution Crossword

Across
Any alteration in the structure or function of an organism or any of its parts that results from natural selection and by which the organism becomes better fitted to survive and multiply in its environment.
The theory that new species evolve from existing species through gradual, often imperceptible changes rather than through abrupt, major changes. The small changes are believed to result in perceptible changes over long periods of time.
The change in the heritable characteristics of biological populations over successive generations.
The theory of evolution by natural selection is the process by which organisms change over time as a result of changes in heritable physical or behavioral traits.
Is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits by choosing which typically animal or plant males and females will sexually reproduce and have offspring together.
The evolutionary process by which populations evolve to become distinct species.
A mode of natural selection in which a single phenotype is favored, causing the allele frequency to continuously shift in one direction. disruptive selection: (or diversifying selection) a mode of natural selection in which extreme values for a trait are favored over intermediate values.
Down
The differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.
The set of all genes, or genetic information, in any population, usually of a particular species.
The termination of a kind of organism or of a group of kinds, usually a species. It is considered to be the death of the last individual of the species
Is the change in the frequency of an existing gene variant in a population due to random sampling of organisms.
In population genetics it is the transfer of genetic variation from one population to another.
Is a theory of biological evolution stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce.
Changes in population genetics in which extreme values for a trait are favored over intermediate values. In this case, the variance of the trait increases and the population is divided into two distinct groups.
A type of natural selection in which the population mean stabilizes on a particular non-extreme trait value.