test 4 matching

Question 1

female birds choose a mate bases on song quality. this is an example of a ________ reproductive barrier

Answer 1

behavioral

Question 2

any barrier to hybrid success that occurs after the zygote is formed is called a ___________ barrier

Answer 2

postzygotic

Question 3

_________ speciation occurs without geographical isolation

Answer 3

sympatric

Question 4

HIV is an example of ___________

Answer 4

retrovirus

Question 5

a _________ is a group of populations whose members have the potential to interbreed in nature and produce viable offspring.

Answer 5

species

Question 6

________ enzymes are enzymes that bacteria have as defense against bacteriophages

Answer 6

restriction

Question 7

the protein shell enclosing the viral genome is called a ____________

Answer 7

capsid

Question 8

_______ are the remains or traces from the past usually found in sedimentary rocks

Answer 8

fossils

Question 9

_______ evolution is the independent evolution of similar features

Answer 9

convergent

Question 10

the _______ consists of all of the copies of every type of allele, at every locus, of all members of a population

Answer 10

gene pool

Question 11

bottleneck and flounder effects are examples of ________________

Answer 11

gene flow / genetic drift

Question 12

_________ is the transfer of alleles into or out of a population due to the movement of fertile individuals or their gametes

Answer 12

geneflow

Question 13

birthweights (usually narrow distribution) are an example of ____________ selection

Answer 13

stabalizing

Question 14

_______ selection occurs when members of one sex compete directly for mates of the opposite sex

Answer 14

intrasexual

Question 15

one species reproduces only in the fall, another in the summer. this is an example of _________ isolation

Answer 15

temporal

Question 16

a _______ is where two species meet and mate

Answer 16

hybrid zone

Question 17

fossil evidence indicates horses have gradually increased in size over geologic time . this is an example of ____________ selection

Answer 17

directional

Question 18

most of the human genome consists of ___________ DNA sequence

Answer 18

repetitive

Question 19

genetic __________ must exist in order for evolution to occur

Answer 19

variation

Question 20

a _________ is a harmless variant or derivative of a pathogen that stimulates the immune system to mount a defense against future infections of that pathogen

Answer 20

vaccine

Question 21

the study of whole sets of genes and their interactions is called_________________

Answer 21

genomics

Question 22

a widespread outbreak of a disease is called a _________

Answer 22

epidemic

Question 23

when allelic frequencies in a population are changing, the population is NOT in hardy Weinberg _____________

Answer 23

equilibrium

Question 24

a population has two alleles for 2% of its genes, this is called average ____________

Answer 24

heterozygosity

Question 25

_________ are a source of genetic diversity

Answer 25

mutations