the genes of a population this is what gradually evolves
What is genepool
This type of trait is controlled by a single gene that has only two alleles, resulting in two distinct phenotypes.
What is single gene trait
These early, simple organisms were the first type of life on Earth; they lack a nucleus and reproduce asexually.
What are prokaryotes
These are the remains of ancient life that provide evidence about the history of life on Earth.
What are fossils
This is the primary source of new genetic variation and is defined as any change in a sequence of DNA.
What is a mutation
the number of times that the allele occurs in a gene pool, compared with the number of times other alleles for the same gene occur
What is relative frequency
These types of traits are controlled by two or more genes.
What is polygenic traits
This biological term refers to the later, more complex cells that contain a nucleus and specialized organelles like mitochondria.
What are eukaryotes
This term refers to the collection of all fossils discovered, showing how different groups of organisms have changed over time.
What is the fossil record
Most heritable differences are due to this process, which happens during the production of gametes.
What is gene shuffling
a group of individuals of the same species that interbreed
What is population
This is a state where allele frequencies remain constant; if they do not change, the population will not evolve
What is genetic equilibrium?
This is the specific name for the asexual reproduction process used by prokaryotes to divide into two identical cells.
What is binary fission
This natural process involves the wearing away of the Earth's surface and is often responsible for exposing buried fossils.
What is erosion
This is the number of phenotypes typically produced by a single-gene trait.
What is 2
Relative frequency is most often expressed as this specific type of mathematical value
What is percentage
In this specific type of selection, individuals at both the upper and lower ends of a distribution curve have higher fitness than those in the middle.
What is disruptive selection
This process is considered an evolutionary advantage because it provides a variety of unique gene combinations in every new generation.
What is sexual reproduction
This extreme geological activity can create new land but can also destroy existing fossil evidence through intense heat.
What is volcanic activity
This type of trait is controlled by two or more genes and often results in a wide range of phenotypes, such as height .
What is a polygenic trait
This is the primary source of new genetic variation, defined as any change in a sequence of DNA.
What is mutation
This term describes an individual's ability to survive and reproduce in its specific environment
What is fitness
This major scientific theory explains how eukaryotic cells evolved from a symbiotic relationship between different types of ancient prokaryotes.
What is the endosymotic theory
These sudden shifts in the Earth's crust can move rock layers and are often responsible for bringing deep fossils closer to the surface.
What are earthquakes
This defines a state where allele frequencies in a population remain constant; if this occurs, the population will not evolve .
What is genetic equilibrium