Bio Midterm

Front 1

What generates the formation of adaptations?

Back 1

Natural Selection

Front 2

The B blood type allele probably originated in Asia and subsequently spread to Europe and other regions of the world. This is an example of what?

Back 2

Gene Flow

Front 3

The apperance of a new mutation is what?

Back 3

Random Event

Front 4

An example of sexual selection

Back 4

The mane of a lion

Front 5

Not an example of evolution

Back 5

Mutations in an individual

Front 6

In evolutionary terms, an organism's fitness is measured by its what?

Back 6

Contribution to the gene pool of the next generation

Front 7

The original source of all genetic variation is?

Back 7

A mutation

Front 8

Because of human preditation the sizes of and genetic variation in populations of most whate species are declining

Back 8

Bottleneck Effect

Front 9

Progeny possess new combinations of alleles every generation

Back 9

Sexual Reproduction

Front 10

Many strains of mycrobacterium tuberculosis the bacteria that causes tuberculosis are resistant to standard drug therapy

Back 10

Directional Selection

Front 11

There are more than 750,000 named species of insects inhabiting a wide range of habitats

Back 11

Adaptive Radiation

Front 12

A recently introduced species of seed eating bird occupies an island where small and large seeds are available. Beak size in the bird population varies from small to large, allowing some birds to be more successful at eating large seeds. Birds with intermediate beak size m ust exert additional effort additional effort to eat seeds

Back 12

Sympatric Speciation

Front 13

Genetic Variation in a population of animals and plants depends mainly on what?

Back 13

sexual recombination

Front 14

Two animals are considered members of diffrent species is they what?

Back 14

Cannot interbreed

Front 15

Which is the first step in allopatrick speciation?

Back 15

Geographic isolation

Front 16

The evolution of numerous species such as Darwin's finches, from a single ancestor is called what?

Back 16

Adaptive radiation

Front 17

According to what model, evolution occurs in spurts:species evolve relatively rapidly, then remain unchanged for long periods of time

Back 17

Punctuated equilibrium

Front 18

Charles Darwin believed that large evolutionary changes originated from the accumulation of many small changes. Today this point of view is called what theory?

Back 18

Theory of gradualism

Front 19

There is a group of small fish living in a lake with a sandy bottom. Most of the fish are light brown, but about 10% are mottled. These fish are normally prey for large birds that live on shore. A construction company dumps a load of gravel in the bottom of the lake, giving it a mottled appearance. Which of these statements presents the most accurate prediction?

Back 19

The proportion of mottled fish will increase over time.

Front 20

Which mechanism for evoution did Lamarck propose?

Back 20

Evolution by inheritance of acquired characteristics

Front 21

The evolutionary effects of genetic drift are greatest when?

Back 21

The population size is small

Front 22

Blue poppies native to china are grown at a plant breeding center in California, where those with the thickest leaves survive and reproduce best in the drier climate. This evolutionary adaptation of the poppies to their new environment is due to what?

Back 22

Directional Selection

Front 23

Animals that possess homologous structures probably what?

Back 23

Evolved from the same ancestor

Front 24

Classifications of organisms that are based exclusively on the evidence of evolutionary relationships are called what?

Back 24

Clasistic classifications

Front 25

The earliest organisms were most likely what?

Back 25

Prokaryotic

Front 26

Prokaryotes that are similar in many ways to eukaryotes are what?

Back 26

Archaea

Front 27

Prokaryoes and eukaryotes have somthing in common what is it?

Back 27

Kinds of nucleotides in their DNA

Front 28

What was probably not present in large amounts in the atmosphere at the time life was thought to have originated?

Back 28

Oxygen

Front 29

Eukaryotic cells probably arose through what?

Back 29

Associations between diffrent prokaryotes

Front 30

The atmoshphere of early Earth probably contained no O2 until the emergence of organisms that what?

Back 30

Used water as a hydrogen source for photosynthesis

Front 31

The prokaryotic organisms most likely to be found living in extreme environments such as salt ponds are the what?

Back 31

Archaea

Front 32

E.Coli bacteria are found in the human intestines and are shaped as what?

Back 32

Bacilli

Front 33

The endosymbiont theory states that which one piece of evidence supporting this theory is the fact that what?

Back 33

Mitochondria and chloroplasts originates as ingested prokaryotes...mitochondria and chloroplasts have their own DNA

Front 34

Which of the following is a diffrence between plants and fungi?

Back 34

Fungi are heterotrophic and plants are autotrophic

Front 35

Fungi have cell walls made of what?

Back 35

Chitin

Front 36

Fungi cannot make their own food, and they cannot move. How do they obtain things to eat?

Back 36

They produce huge numbers of sppores and they grow rapidly

Front 37

Fungi of the phylum Ascomycota are recognized on the basis of their production of what during sexual reproduction?

Back 37

Saclike structures

Front 38

Mosses, liverworts, and hornworts

Back 38

Bryophyta

Front 39

Ferns

Back 39

Pterophyta

Front 40

Cone bearing plants

Back 40

Coniferphyta

Front 41

Flowering Plants

Back 41

Anthophyta

Front 42

What is not a characteristic of all animals?

Back 42

They don't all have tissues, organs, and organ systems

Front 43

Soft bodied animals usually protected by a hard shell

Back 43

Mollusca

Front 44

Possess notochord, dorsal nerve chord, pharyngeal slits and postnatal tail

Back 44

Chordata

Front 45

Sessile with porus bodies

Back 45

Porifera

Front 46

Body segmented with many appendages

Back 46

Arthropoda

Front 47

Segmented Worms

Back 47

Annelida