Theory of Evolution
Random change to genetic material
Mutation
_______________ theory that evolution happens in small , gradual steps over time.
Gradualism
This is the study of how creatures develop before being born or hatching from an egg.
Embryology
Name the theory that explains how organisms change because of adaptations that help them survive
What is natural selection
Random movement of individuals between populations which increases genetic diversity is known as (2 words)
Gene Flow
Flowers and pollinators are an example of this type of evolution....
Co-Evolution
Comparative Biochemistry suggests that molecules in species with a a recent common ancestor also share....
amino acid/DNA sequences
Evolution can be defined as any change in the _______ traits (physical or behavioural characteristics) with in a population over time
What are heritable traits
This occurs when the probability that two individuals in a population will mate is not the same for all possible pairs of individuals. (2 words(=)
Non-Random Mating
Unrelated species evolve similar traits because they live in similar niches or have similar lifestyles. (2 words)
Convergent Evolution
Similarities like elbows in the front limbs of mammals such as bats, penguins and alligators are called (two words)
What are homologus structures
This principle of Natural Selection states that individuals in a population will show differences
Variation
A massive amount of evidence from many different fields such as genetics, chemistry, paleontology, and mathematics, overwhelmingly suggest that all living things share a ________ ________ (two words)
common ancestor
Certain individuals in a population have a higher survival and reproduction rate.
Natural selection
Diversification of a species into a number of different species is known as... (2 words)
Divergent evolution
intermediate
This type of speciation does not involve a barrier, but occurs when errors in meiosis result in gametes that produce offspring that are no longer able to reproduce with members of older generations.
Sympatric speciation
Random change in the allelic frequency in a population, caused by something that shrinks a population size is called ... (2 words)
Genetic Drift
_______ ______ theory that evolution occurs with relatively sudden periods of speciation followed by long periods of stability
Punctuated Equilibrium
The fact that whales have placenta, give birth to live young, are warm blooded, no gills, and have lungs like land mammals, is proof of evolution from the field of ____________ ______________ (two words)
Comparative Anatomy
A type of reproductive isolation that prevents reproduction by making fertilization unlikely.
Prezygotic Isolation.