UCSB EEMB 2 FINAL LATEST
EXAM
autopolyploidy - ANSWERS-polyploidy in which the chromosome
complement consists of more than two copies of homologous
chromosomes
allopolyploidy - ANSWERS-individual or strain whose chromosomes
are composed of more than two genomes each of which has been
derived more or less complete but possibly modified from one of two or
more species
-mating of diff species
When does polyploidy occur? - ANSWERS-When complete haploid sets
of chromosomes are added to a diploid genome
-improper split of sister chromatids or homologous chromosomes
biological species concept - ANSWERS-explanation for how species
form. Species = pop of orgs that can breed to produce fertile offspring
fusion - ANSWERS-process in which several uni-nuclear cells combine
to form a multi-nuclear cell
END OF
PAGE
1
, UCSB EEMB 2 FINAL LATEST
EXAM
genetic divergence - ANSWERS-process in which 2+ pops of an
ancestral species accumulate independent genetic changes (mutations)
through time
-often after they have been reproductively isolated for a while
hybrid zone - ANSWERS-a narrow geographic region where two
genetically distinct populations or species are found in close proximity
and hybridize to produce offspring of mixed ancestry
-hybridization: mating organisms of different varieties or species to
create a hybrid
morphological species concept - ANSWERS-characterizes a species by
body and other structural features (sexual + asexual)
-useful when gene flow is unknown
parapatric speciation - ANSWERS-Rare! pops are separated by an
extreme change in habit then develop different distinct characteristics
and lifestyles
END OF
PAGE
2
EXAM
autopolyploidy - ANSWERS-polyploidy in which the chromosome
complement consists of more than two copies of homologous
chromosomes
allopolyploidy - ANSWERS-individual or strain whose chromosomes
are composed of more than two genomes each of which has been
derived more or less complete but possibly modified from one of two or
more species
-mating of diff species
When does polyploidy occur? - ANSWERS-When complete haploid sets
of chromosomes are added to a diploid genome
-improper split of sister chromatids or homologous chromosomes
biological species concept - ANSWERS-explanation for how species
form. Species = pop of orgs that can breed to produce fertile offspring
fusion - ANSWERS-process in which several uni-nuclear cells combine
to form a multi-nuclear cell
END OF
PAGE
1
, UCSB EEMB 2 FINAL LATEST
EXAM
genetic divergence - ANSWERS-process in which 2+ pops of an
ancestral species accumulate independent genetic changes (mutations)
through time
-often after they have been reproductively isolated for a while
hybrid zone - ANSWERS-a narrow geographic region where two
genetically distinct populations or species are found in close proximity
and hybridize to produce offspring of mixed ancestry
-hybridization: mating organisms of different varieties or species to
create a hybrid
morphological species concept - ANSWERS-characterizes a species by
body and other structural features (sexual + asexual)
-useful when gene flow is unknown
parapatric speciation - ANSWERS-Rare! pops are separated by an
extreme change in habit then develop different distinct characteristics
and lifestyles
END OF
PAGE
2
