On the Galápagos Islands, Charles Darwin observed

similar species, with traits that suited their particular environments.

The number of phenotypes produced for a given trait depends upon

the number of genes thatcontrol the trait

Darwin’s concept of evolution was NOT influenced by

knowledge about the structure of DNA

One of the adaptations that Darwin noted on the finch was the

birds’ different-shaped beaks

James Hutton’s and Charles Lyell’s work was important to Darwin

said Earth was old enough for evolution to have occurred

Interbreeding among members of a population results in

no changes in relative frequencies of alleles in gene pool

The economist Thomas Malthus suggested that

Soon, insufficient food for the growing human population.

When Charles Darwin returned from the voyage of the Beagle, he

wrote about his ideas but waited many years to publish them

Sharks and dolphins are not closely related, what explains their similar appearance?

Analogous structures that are adapted to same environment

The gene shuffling that occurs as part of sexual reproduction

does not change the gene pool’s allele frequencies.

studbud

2021 Final Evolution

22 termsStudBud Administration2,634 plays

A review of some of the concepts for the evolution summative assessment

Flashcards22 cardsFPractice quizPHost liveL

Questions 22

Answers

1
The situation in polygenic traits that creates a graph with two humps is called
Genetic drift.
Disruptive selection.
Stabilizing selection.
Directional selection
2
On the Galápagos Islands, Charles Darwin observed
similar species, with traits that suited their particular environments.
species completelyunrelated to those found in South America.
species exactly like thosefound in South America
completely unrelatedspecies on each of the islands.
3
The number of phenotypes produced for a given trait depends upon
which form of the trait isdominant
the number of genes thatcontrol the trait
the relationship of allelefrequencies to Mendelian ratios
the relative frequencies ofthe various alleles
4
Darwin’s concept of evolution was NOT influenced by
knowledge about the structure of DNA
his collection of specimens
his trip on the H.M.S. Beagle
the work of Charles Lyell
5
One of the adaptations that Darwin noted on the finch was the
length of the birds’ necks
birds’ different-shaped beaks
number of eggs in each bird’s nest
similarities of the birds’ embryos
6
Some flowers open at midday and other plants whose flowers open late in the day? ???ISOLATION??
geographic isolation
behavioral isolation
temporal isolation
genetic drift
7
Charles Darwin called ability of organism to survive and reproduce in its specific environment
diversity
evolution
adaptation.
fitness
8
James Hutton’s and Charles Lyell’s work was important to Darwin
explained volcanoes and earthquakes.
refuted Lamarck, which was based on misunderstandings
explained all geologic events on Earth
said Earth was old enough for evolution to have occurred
9
Interbreeding among members of a population results in
different types of alleles in the gene pool
no changes in relative frequencies of alleles in gene pool
an absence of genetic variation in the population
changes in the relative frequencies of alleles in gene pool
10
Two main sources of genetic variation are...
single-gene traits and polygenic traits
genotypes and phenotypes
crossing over and mutations
directional selection and disruptive selection
11
The economist Thomas Malthus suggested that
people die faster than babies are born
in the 1700s, England needed more housing
Soon, insufficient food for the growing human population.
the majority of a species’ offspring die
12
living species descended, with changes, from other species over time. This is called...
reproductive isolation
acquired characteristics
descent with modification
survival of the fittest
13
When Charles Darwin returned from the voyage of the Beagle, he
immediately published his ideas about evolution
copied the evolutionary theory of Wallace
wrote about his ideas but waited many years to publish them
realized his ideas about evolution were wrong
14
The similar bones in the forelimbs of the animals are examples of
Acquired structures
Vestigial structures
Analogous structures
Homologous structures
15
Sharks and dolphins are not closely related, what explains their similar appearance?
Analogous structures that are adapted to same environment
Homologous structures inherited from a common ancestor
Interbreeding (mating) between sharks and dolphins
Vestigial traits that are no longer useful to the species
16
When lions prey on a herd of antelopes, some antelopes are killed and some escape. DUE TO...
survival of the fittest
acquired characteristics
descent with modification
reproductive isolation
17
The allele frequencies of a population are more likely to remain unchanged if......
frequent movement into and out of the population occurs.
the population size is reduced.
the mutation rate increases.
all mating is random.
18
The situation in which allele frequencies of a population remain constant is called
genetic equilibrium.
natural selection
genetic drift
evolution
19
Darwin’s theory of evolution suggests that
species change over time
animals that look alike are the most closely related
extinct species are not related to living species
different species can interbreed
20
Which of the following events do biologists consider a random change
directional selection
disruptive selection
genetic drift
speciation
21
In humans, the pelvis and femur are involved in walking. In whales, the pelvis and femur also exist and are called...
examples of naturalvariation
acquired traits.
vestigial structures
examples of fossils.
22
The gene shuffling that occurs as part of sexual reproduction
does not change the gene pool’s allele frequencies.
changes the gene pool’sallele frequencies
keeps the phenotypesconsistent
is caused by radiation orchemicals

2021 Final Evolution Flashcards | StudBud