Ch. 18-20 Evolution Test

Unrelated organisms in similar environments may evolve adaptations to similar niches

A few individuals colonize a new habitat and carry alleles that differ in rel. freq. from those of the main pop

Which is the most specific level of classificiation?

Two or more species reproduce at different times

How many Domains are there?

What is natural selections role in evolution?

Which is NOT a way genetic variation is produced?

Which is the fifth level of classification from most broad to most specific?

A group of individuals of the same species that mate and produce offspring

In small populations, individuals that carry a particular allele, may leave more descendants than others just by chance

The origin of new species

The study of the evolutionary history of lineages of organisms:

Individual's success in passing genes to the next generation

Which is the first level of classification from most broad to most specific?

Groups that have biological meaning

Which word is a condition that can disturb genetic equilibrium?

A group of species that includes a single common ancestor and all descendants of that ancestor

Which is the seventh level of classification from most broad to most specific?

All physical, physiological, and behavioral characteristics of an organism, brown

Changes in one gene pool could not spread to the other splitting the population

Females of many animal species select mates based on size, strength, or coloration

Which is the second level of classification from most broad to most specific?

Illustrates current hypotheses regarding evolutionary relationships among the taxa within the three domains of life

A single species evolves into several distinct species adapted to different niches over time

Each species is assigned a two-part (genus, species) scientific name written in italics

The movement of genes into or out of a population, immigration and emigration

Which word is a condition that can disturb genetic equilibrium?

Uses mutation rates in DNA to estimate the time two species have been evolving independently

How many Kingdoms are there?

Two populations are separated by geographic barriers such as rivers, mountains, etc

Which is the sixth level of classification from most broad to most specific?

A change in allele frequency following a dramatic reduction in the size of a population, reducing genetic diversity

All the genes present in a population, including all the alleles for a certain gene

Links groups of organisms by showing current hypotheses about how evolutionary lines branched off from common ancestors

Small changes in Hox gene activity during embryological development can produce --- changes in adult animals

Which word is a condition that can disturb genetic equilibrium?

Stable periods interrupted by rapid change

The science of naming and grouping organisms

Phenotypes at both the upper and lower ends of the curve have higher fitness than individuals near the middle

Why is kingdom Protista disputed?

Allele frequencies in a population should remain constant unless one or more factors causes those frequencies to change

The combination of alleles an individual carries, Bb

Which is the third level of classification from most broad to most specific?

Which word is a condition that can disturb genetic equilibrium?

If two populations that were once able to interbreed evolve differences in behaviors

Which word is a condition that can disturb genetic equilibrium?

Individual's at one end of the curve have higher fitness than individuals at either end

Population of physically similar, interbreeding organisms that do not interbreed with other such groups

Individuals near the center of the curve have higher fitness than individuals near the middle

The number of times an allele occurs in a gene pool as a percentage of the total occurrence of all genes

Which is the fourth level of classification from most broad to most specific?

If the population is not evolving, allele frequencies in its gene pool are not changing

Each part of an embryo starts to grow at a __ time, grows for a __ length of time, stops growing at __ time

Organelles in eukaryotic cells were formed when different types of cells joined

The process by which two species evolve in response to changes in each other

Trait that arose in the most recent common ancestor of a lineage and was passed to its descendants

A slow steady change in a particular line of descent

A system of naming and classifying organisms based on shared characteristics and universal rules