"Organisms better adapted to their immediate environment are most likely to survive and reproduce" is a statement that best agrees with the theory of evolution by natural selection put forth by these scientists?
Darwin and Wallace
What is the relation between natural selection and evolution?
Natural selection is one of the several mechanisms of evolution
The observations of the dissimilar organisms have similar structures. Biologists suggest that__________
Dissimilar organisms might have evolved from a distant, common ancestor
The bones of the wings of bats are homologous to the bones of the________ of their ancestors?
The approach to evolution that involves the study of similar structures that appears during the development of different organisms is known as the study of_________
All known organism transcribe genetic info. to protein molecules via the same genetic code. The finding strongly supports the hypothesis that________________
all organisms are descended from a single common ancestors
Biologists have noticed the most human beings enjoy sex. How would they explain this in evolutionary terms?
Early humans enjoyed sex most had the most babies
What is not an important part of natural selection?
selective breeding of domestic plants and animals
Traits that enhance an individual's ability to compete for limited resources are called____________
The members of a population have traits that are both heritable and variable among individuals, then_______
advantageous traits may become more widespread in subsequent generations
In the Hardy-Weinberg theorem, p squared represents___________
the frequency of homologous dominants it the gene pool
In the Hardy-Weinberg theorem, 1 represents___________
the sum of the frequencies of all the alleles of a particular gene
A colony of humans on the moon is isolated from Earth is a possible result in the_________ of a population of humans?
"Wind blows pollen from one population of plants to another and cross-fertilization occurs" is the best example of________________
The diversity in morphologies seen in these breeds of dogs is the result of____________
The following occurrences would have the greater impact of the future biological evolution of the human population?
A mutation occurs in one of your sperm or egg cells
"Under some conditions, heterozygotes have greater reproductive success than homozygotes" is called?
"The best-adapted organisms will leave behind more offspring" is a statement that best describes how the process of___________ works to change allele frequencies?
In the result of having a homozygous recessive (aa)condition of the responsible gene, what statement makes it true?
Heterozygous individuals will survive and be able to pass the recessive allele on to their offspring(Aa)
"How many fertile offspring it produces" is an accurate measures an_________
Organism's Darwinian fitness
In a population of bears, which is most likely to be considered to have the greatest Darwinian fitness?
a bear that leaves the most descendants
Birds with average-sized wings survived a severe storm more successfully than other birds in the same population with longer or shorter wings. This illustrates______
A population of squirrels have adapted to hiding from prey and fighting off prey over the years, now the squirrels are very small and very large. What process is responsible for this outcome?
According to the "biological species" concept, what is a species?
A population that interbreeds and produces fertile offspring
According to the "biological species" concept members of different species__________
do not mate successfully under natural conditions
each species is genetically isolated from other species because__________
each species is reproductively isolated
What statement follows the reproductive barriers actually prevents individuals of different species rom mating with each other?
Two species of water lilies in the same pond do not interbreed because one blooms at night and the other during the day. The reproductive barrier between them is an example of_____
"Two fruit flies of different species produce sterile offspring" and "the hybrid offspring of two species of jimsonweeds always die before reproducing" are examples of a_________
Individuals of different species living in the same area may be prevented from interbreeding by responding to different mating dancing. This is called
What is not an example of postzygotic barrier?
The two populations live in the same general area but not the same type of environment
The wings of birds and insects have the same function, but do not have the same evolutionary origin. Birds and insect wings are _________
The system of binomial nomenclature assigns to each organism a unique name that describes its________
species and genus