Exam 18: Organic Evolution--The Theory and Its Supporting Evidence

In a pea plant, R is the dominant allele and represents a red flower, and r is the recessive allele and represents a white flower. An organism that inherits the pair Rr will have which color flower?

Genes are the pair of controlling factors in alleles, and both have equal dominance.

Ultraviolet radiation, X-rays, and extreme temperatures are all _____.

Who proposed that many plants and animals have become extinct through time and that fossils differ through time?

Mutations involve some kind of change in _____.

During the 1930s and 1940s, a _____ view of evolution was formed.

Whether a mutation is harmful or beneficial can only be judged in respect to the conditions in which the organism lives.

Convergent evolution refers to similar characteristics that arise in closely related organisms.

Whose original concept of inheritance did Lysenko's ideas reflect?

Which term best indicates changes such as the origin of new species?

_____ is a special type of natural selection in which males compete for mates or females select mates based on such traits.

Structures that are superficially dissimilar but have the same structure in terms of bones, muscles, nerves, and blood vessels are best described as ____.

In addition to fossils, what are other types of evidence for evolutionary theory?

Describe divergent evolution.

____________________ evolution is the development of similar characteristics in distantly related organisms.

Briefly explain how the concept of punctuated equilibrium is compatible with the fossil record.

The fossil record shows a sequence of variations based on what?

Biogeography is the geographic distribution of organisms.

What is cladistics? How does cladistics group organisms?

Sexual reproduction and _____ account for most variation in populations.