NR 435 EXAM ANSWER KEY 2025/ 2026
adaptation
A trait that helps an organism
survive and reproduce
selective pressure
a nonrandom influence that
affects who survives or
reproduces
natural selection
The process by which
organisms that are best
adapted to their environment
are most likely to survive
and reproduce.
genes
stretches of dna, the cells
hereditary material that each
direct the production of a
particular protein and
influence and individual's
traits
evolution
differences in the gene
frequencies within a
population from one
generation to the next
gene frequencies
the assortment and
abundance of particular
variants of genes relative to
each other within a
population
genetic diversity
the heritable variation among
individuals of a single
population or within the
species as a whole
, NR 435 EXAM ANSWER KEY 2025/ 2026
invasive species
A nonnative species that
enters a new area, causing
harm to the native species
and environment, the
economy, or human health.
extinct/extinction
The complete loss of a
species from an area; may be
local (gone from an area) or
global (gone for good).
Coevolution
process in which two or
more species evolve in
response to changes in each
other
Each provide the selective
pressures that determines
which traits are favored by
natural selection in the other
endemic
species that is native to the
particular area- not found
anywhere else
extirpation
The disappearance of a
particular population from a
given area, but not the entire
species globally
genetic drift
the change in gene
frequencies of a population
over time due to random
mating that results in the loss
of some gene variants
adaptation
A trait that helps an organism
survive and reproduce
selective pressure
a nonrandom influence that
affects who survives or
reproduces
natural selection
The process by which
organisms that are best
adapted to their environment
are most likely to survive
and reproduce.
genes
stretches of dna, the cells
hereditary material that each
direct the production of a
particular protein and
influence and individual's
traits
evolution
differences in the gene
frequencies within a
population from one
generation to the next
gene frequencies
the assortment and
abundance of particular
variants of genes relative to
each other within a
population
genetic diversity
the heritable variation among
individuals of a single
population or within the
species as a whole
, NR 435 EXAM ANSWER KEY 2025/ 2026
invasive species
A nonnative species that
enters a new area, causing
harm to the native species
and environment, the
economy, or human health.
extinct/extinction
The complete loss of a
species from an area; may be
local (gone from an area) or
global (gone for good).
Coevolution
process in which two or
more species evolve in
response to changes in each
other
Each provide the selective
pressures that determines
which traits are favored by
natural selection in the other
endemic
species that is native to the
particular area- not found
anywhere else
extirpation
The disappearance of a
particular population from a
given area, but not the entire
species globally
genetic drift
the change in gene
frequencies of a population
over time due to random
mating that results in the loss
of some gene variants
