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Canine Review
Canine Review
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1
Gene flow is
The ability of genes to leave a population
The variety of genes in a population
Movement of individuals in and out of a population
All of the individuals in a population
2
Divergent evolution
all of these
when different species evolve a similar form
is demonstrated in dolphins and sharks
occurs when one species becomes two
3
biogeography
neither
study of the distribution of organisms around the world
study of embryos and their development
4
What is “common ancestry”? How do scientists know different organisms share a common ancestor
organisms are better suited to their environment
Species evolve from different ancestors. Blood typing
Species do not evolve. Anologous structures
Species evolve from one source. DNA, common traits
5
Structures shared by organisms that come from a common ancestor are called
embryonic similarities.
analogous structures.
homologous structures.
vestigial structures.
6
Genetic drift is
the same as natural selection
this refers to the movement of genes through a population
change in the gene pool of a population due to chance
change in allele frequency due to mutation
7
order of the taxa
kingdom,domain, phylum, class, order, family, genus species
domain, kingdom, phylum, class, order, family, genus species
domain, kingdom,class,phylum, , order, family, genus species
domain, kingdom, family, phylum, class, order, genus species
8
Which organism from the cladogram does not have a vertebral column?
Leopard
Tuna
Lamprey
Lancelet
9
According to the phylogenetic tree,...
racoons evolved from otters
wolves and coyotes share a common ancestor
wolves evolved from coyotes
wolves evolved from panthers
10
What is selective breeding?
The amount of usable material in a plant
Selecting only the best plants to harvest
Breeding plants with favourable characteristics
Growing only one type of crop in a field
11
Which Prezygotic mechanism means they display different courtship rituals
behaiour
different breeding times
habitat differences
mechanical
12
Humans developed breeds of dogs with different characteristics through ____________.
selection
migration
hibernation
respiration
13
What is natural selection?
Organisms with good adaptations survive and reproduce
Organisms become extinct
People change animal traits on a farm
Organisms with bad adaptations survive better
14
Behavioral Isolation:
species have different mating calls or dances
species cannot mate due to a physical barrier
live in same general area but occupy different niches
species breed at different times of the year
15
Wolves help maintain herbivore populations, which keeps _______ from being overeaten.
other wolves
fish
plants
insects
16
Reproductive Isolation causes...
Speciation
Adaptations.
Sadness.
Phylogenetic Trees
17
Which type of natural selection can lead to speciation?
Directional
Stabilising
Dimensional
Disruptive
18
Genetic drift _________ genetic diversity.
decreases
What unit is this?
increases
has no effect on
19
What is taxonomy?
the scientific study of how living things are classified
the process used by geologists to classify rocks
the process of observing an organism’s behavior
the name of Aristotle’s classification system
20
Homologous structures (human arm, bird's wing, whale's fin) all point to a common ancestor
True
False
