Exam 18: Organic Evolution The Theory and Its Supporting Evidence

DNA is an abbreviation for ____________________.

When was the greatest extinction of all time and what was the consequence of that extinction?

The fossil record is biased because of selective preservation of organisms with ____________________ parts.

Who demonstrated that many plants and animals had become extinct through time and that fossils differed through time?

The Lysenko affair shows the absurdity of basing scientific theories on philosophic or political beliefs.

How can traits in organisms evolve over time?

Alleles are the pair of controlling factors in genes,and both have equal dominance.

What are body fossils?

Genes controlling the same trait are called ____________________.

With the Linnaean classification scheme,as one moves down the hierarchy,the categories become more ____.

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

Features that serve the same purpose on very dissimilar organisms are called ____.

A clade is

All mutations are either harmful or beneficial.

Name some types of trace fossils.

If the offspring of the above situation with Aa mates with an individual with the makeup aa,what are the chances that an offspring will express the recessive trait? Explain.

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

The process that involves changes in the genetic makeup of a population is ____________________.

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

Describe divergent evolution.