Exam 12: Processes Of Evolution

For each statement, select the best choice that represents the description given. -group of species that share a set of characteristics

Match the evolutionary concepts correctly with the correct description or example.Some choices may be used more than once. -Two species of hawk are able to mate successfully,but one hunts in the morning and the other hunts at night.Mating between the two species,therefore,does not occur.

____ selection occurs when individuals choose mates with a particular desirable trait.

A 2013 investigation found "worrisome" amounts of ____ in 97% of the chicken meat in stores across the United States.

What is the original source of new alleles?  

What is the best definition of a population?  

____ occurs when a change in chromosome number takes place in a single generation.

Match the evolutionary concepts correctly with the correct description or example.Some choices may be used more than once. -Prairie grouse females choose to mate with males that display the most intricate dance and make the loudest thumping noise with their chests.

Which of the following is most likely the result of a neutral mutation?  

Overhunting of species,such as tigers,reduces their numbers and their genetic diversity.This is an example of _____.

The Old Order Amish in Lancaster County is descended from one man and woman and has an unusually high frequency of a recessive allele that causes Ellis-van Creveld syndrome.This is an example of ____.

Many male birds will expend a great deal of energy building nests.Females will mate with the males who build the best nests.This is best described as an example of ____.

Two species of toads have been successfully interbred in a laboratory but do not hybridize in nature because one species mates in summer and the other mates in the fall.This is an example of ____ isolation.

For each statement, select the genetic evolutionary concept that best represents the description. -Mating among close relatives.

How are new combinations of alleles introduced into chromosomes?  

Hawaiian honeycreepers exhibit diverse beaks that allow them to feed on insects,flowers,and seeds in their different habitats.This is an example of ____.

Alligators more closely resemble lizards than birds; however,alligators and birds have four-chambered hearts,which lizards do not have.In this example,the four-chambered heart is a ____,which indicates that alligators are ____ related to birds than to lizards.

The observation that female lions prefer male lions with darker manes is an example of ____.

For each statement, select the genetic evolutionary concept that best represents the description. -Reduction in population size so severe that it reduces genetic diversity.